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Published by Kayeng Vang, 2023-08-08 01:41:10

ປື້ມແບບຮຽນ ຟີຊິກສາດ ມ6

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ຟີຊິກສາດ

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45 W %fi*( & &fi' - (" fiffi! fifi ff 2fi"+& . ( %fi & "* fi- & %! & / 5.8( *(&fi' - (" fi &* "# %& %" + ! 3- 3 ffl & &) *&fi%fi ! - * fi". 4.2 fi %fi*( &fi' - (" fi *(&fi' - (" fi 3 ff "ffl & ffl ) (: - &) (" fi, ff "% & *( &fi ! - &) (" *3 (/ 5.9). 1) &) (" fi : * + & & (" fi2$ ffl & fi *ff&- fi2$fifl $ff%fi ffl / fi %/ . 2) ff "% & *( &fi- : * + & %*( &fi* - &fi ffl - fi3- fifi!"ffi! &* $. 3) &) (" *3 : * + & *fi ! (" fi ' fflfi *ff &- fi2$fifl $ffffl / fi$ fl 1!. !) *( &fi' - fi ! ) $ (turbine) fi , ) &) (" fi 4& ) (" . ff "% & *( &fi- !& / / ! &) (" *3 (0 ' fl *3) ). !) *( &fi' - ' 2 / $1- !*2, &) (" fi & !$" * & fi- # ! fi & 0'- 2 / &) /. ff "% & *( &fi- !& / ! / &) (" *3 (fi % fi). !) *( &fi' - fi ff &, &) (" fi & !$" * & fi# - ! fi & 0'- 3/ 2$ & / fi*ff . ff "% & *( &fi- & $ ! &) (" *3 (fi ff fi). 2 / 5.10 ffi & " fi & $ ) %fi*( &fi' - fi fi ) fifi ) ' 4) ffl*% ffl &) A !"*% #$ *(&fi - & fi B. $1' *% $ &) / C * 2$!/ *( / &fi - &# 2&) /. *(&fi - & fi + & fi *% ! fifi&) /ffl '$"fi #" Z. / 5.9 &)(" fi &)(" *3 fflfi Q1 Q2 WQQ 1 2 / 5.10 fi %fi*( &fi' - fi ) Z A B C M L K F 2_TB Physics M6.pdf 50 7/30/2015 3:08:34 PM ສ.ວ.ສ ສະຫງວນລຂ ິ ະສດ ິ

46 5. ff %fi*(&fi' - (" fi 5.1 ff $ () 2" ffi! *(&fi' - (" fi * & "22$! (" fi%fi &) (" fi * ' # $ 1 *& 2& & * & $ 1- * "22$ * -fi * fi#+ - fi ffl #& $ 1 . *ff&- fiffl! ( * -fi * fi#+ - fi $ 1- $1 %fi*(&fi' - (" fi, *ff& 2 ! ff * ffl" ) . ff %fi*(&fi' - (" fi fi& ffl "!$" & ! & (" fi &* $ ! ! (" fi & &) (" fiffi! fifi. (#! & * " & fi, ! " fl . 1 2 1 1 QQ W Q Q fl (5.14) ff %fi*(&fi' - (" fi *"! 2 ) fi" & 1. $ (" 4 " (" & fi & &) (" fiffi! fifi &) * ' 3 " *ff ff & "& +& %fi(" fi & &) (" fiffi! fififflfi# *2$&) (" *3 ! fi&5. - ffl ffl "' ffi! *(&fi' - (" fi 2$/ " & ff %fi*(&fi' - fi ) &) !fl#/ " & 20%; ff %fi*(&fi' - ' 2 / ! #fl *0 35%. 5.2 $1 *ff & ff %fi*(&fi' - (" fi 1824 "{ & &"- & (1796-1832) #ff " : & ff %fi*(&fi' - (" fi*ff2 ffl ) &) ( & 121 ( )/ TT T 1 2 12 2 11 1 1 QQ TT T QT T fl ffi (5.15) 2 T1 fi& $ff fl / ) %fi(" / fi ! T2 fi& $ff fl / ) %fi / &) (" *3 . / 5.11 2_TB Physics M6.pdf 51 7/30/2015 3:08:35 PM ສ.ວ.ສ ສະຫງວນລຂ ິ ະສດ ິ

47 fl *fi" & ff %fi*(&fi' - (" fififl (ffl $1- *" $) " : & ff fifl(ffl . ' / ff fifl(ffl %fi*( &fi' - (" fi 2$ * "/ *ff& &- fifflfi ff %fi*(&fi' - (" fi2$ / %ffl fi# *ff & T1 2$/ % ! $ fl 1 T2 2$ffl !&) . ffl"3 & 4:*ffl ffl %fi*( ) &fi' - $ fi *() &fi+ - & 2ffl! & &"ffl fi *ffi #40 $ & 50kg. fi *%) #$ &) /fifl $ff / 300C ! fi ) &ff& fifi' ' fifl $ff / 100C /" (" & fi{' *ff %fi0 ) $ & & 6 35 10 J/kg ! !) %fi*( &fi' - * & 100 kW. '(& #! & ff %fi' $ fi ! ) ff fifl(ffl . " & & /: ff %fi' $ fi :) 3 6 1 . 100 10 3600 0,21 21% 50 35 10 W Pt Q m fl ffl ff fifl(ffl : 1 2 max 1 573 373 0,35 35% 573 T T T fl ( 0 ! ) *{ $ 1. '& 2 ) / Q UW *ff&- fifi & ff! ff 2! 2 ! ) : . 2fi* & 0##4 - . %. fi 2$ ) fifi fi (" ) 2*"! / &# $1- &(" fi. 2. *(&fi' - (" fi $ & ? 3. 'fi$ & 1 *( &fi#$"%fi*( - &fi' - (" fi? 4. 2 + fi ( Argon, Ar) 2 ! (kmol) ' ) ! 4 2,24 10 cm3 3& / 0C ff 2ffl(" 1,01.105 Pa 2$ ) ! 1,4.104 cm3 3ff 2ffl & / (" * & *. '(& #! & : m 50kg t 1h 3600s 1 T 273 300 C = 573K 2 T 273 100 C = 373K 6 ffl 35 10 J/kg P 100kW 2_TB Physics M6.pdf 52 7/30/2015 3:08:35 PM ສ.ວ.ສ ສະຫງວນລຂ ິ ະສດ ິ

48 . &2 2 + ; %. fi$ff fl %fi ff $ / 1 + . (. ff! ff 2%fi & & . . ff! (" fi & &fifi. 5. + & 2! ' ) 3 ff 2ffl & / (" 5 2 3.10 N/m ) ! 8 ! ff $1ffl 2$ fi% (" &) & , 3- fifi ! ) ! 10 ! '(& #! & : . & ffi! fifi. %. ! & ff! ff 2%fi "/ 2* & &fi*fi - #ffl2$ fi # ! (" fi 1000 J. 6. fifl(ffl 2! ' ) , ) ! V1=1 ! (" P1=1atm !" 03- - fififf 2ffl%" fi $ff fl / &) ! 3 & 2ff " & / & ) ! V2=2 . $1' *ff & * 2$ *3 ! *ff &- fi* 2$(" $ fl 1! 2 *&- fi ffl"& & ) ! &) & . fl 3 - fififf 2ffl%" (" &) & #2ff " /& & V3=4 . 'ffl & * ff"ff !$" & P ! V !" 2 ) * %fi 2%" & " & % * . 7. fifl$ff%fifi / fi*% $ * %fi*(&fi' - (" fi & 600 Co *"! fi ff&fifi' * fi$ff fl %fifi / *$ 1- fi 260 Co . '(& #! & ff fifl( ffl%fi*( &fi' - . 8. fifl$ff%fi / &) (" fi%fi*( &fi' - (" fi & 520 Co , fi$ff fl %fi / &) (" fi & 340 Co . 0 " & &*(&fi' - (" fi & "ffi! & & *& 2 2*&fi- # ! (" fi' &) (" fi 107 J. (0"- *( & &fi' - & "* & *(&fi' - fi fl(ffl ). 9. *(&fi' - fi ) !) 14,8kW . 2ffl! & &"*ffl ffl *ffi) #40 & 8,1kg fifl $ff%fi4 / ) (" & 200 Co *&fifi- $ff fl %fi4 / ) (" *3 ! & 108 Co . '(& #! & ff ffl"' ! ff fifl(ffl %fi*( &fi' - . "/ & 0ff ffi(" & fi%fi0 & & 3,6.107 J /kg. 2_TB Physics M6.pdf 53 7/30/2015 3:08:35 PM ສ.ວ.ສ ສະຫງວນລຂ ິ ະສດ ິ

49 II ffi flfl ffi fflff ffi fi ! " #3 ! $% & ffi'ffi!&! ff & ! $ &flfl ( ffffi ! )*& ! flfl +! ! flfl &flfl &fl fl ! ff), &flfl # 6. 1. 1: &- %ffi)fflff +. $ %+"ffi ! ffi (ffl $/" 0ffi / /0 # ffi& ff & ffi/ $%, 1 2: & ffl ffi +. ! ffi (ffl $/ " 0 & "/ffi / $ & &ffi&/ & 6.2. ffl- & - &- %ffi)fflff +" ffi &- %ffi)ff & # ffl- &- %ffi)ff &ffi& fflffl +" ffi 2 /3 & ff ! # fl 3ff ffl & $ % &- %ffi)ff+ . $% +"ffi $ flfl ( "' ! flfl (4 & - flfl 3 ( )ff & flfl (4 &- %ffi)ff# !ffi (Thales) -!ffi ! -3 /3 * 2flfl5/& # " &4 5) ! $ & 2, (amber) &4 ff&fi5) &4' ff" ' &$ ff 0 affi.& b '&ffl ffi" ffi !&4( 2,$ffi ! && ' fi5) - 6 ( /0 4$ & 2, ! " $ ! )ff fi & 2, # ffl - 2 flfl & , ff ffl '# ) , ! ff -%ffi)fffflffi +. -%ffi)ff)ffffi 6.1 ffi/ 7#8 & ! $ &flfl ( 2_TB Physics M6.pdf 54 7/30/2015 3:08:35 PM ສ.ວ.ສ ສະຫງວນລຂ ິ ະສດ ິ

50 ff (William Gilbert) 2 & ,2 ! / & ffl( ffi &-3 & 2, ff (Gilbert) 9 (electricity) 3& ff )3 "& & 2, 2ffi* ! )*& ! ) , /ffi ff ) &3 2flfl ( (! 5)9 ! )*& 6 ff *&!ff (Benjamin Franklin) , ffffi 3flfl ( & flfl ! flfl ( ( &- %ffi) ff fl fl (! # + !&ffi &$$ flfl 3 ( ff / ! flfl 3 ( )ff & # ! , flfl "& ( & 2 - ! +. 2 - !# 2. flffi 2.1# ffifflfffi & ffl ffi +" ffi $ & flfl () &3 ff + " ffi $ % &- %ffi )fffflffi +. , $ &- %ffi) ff flfl () & 3 ff + .# 2.2# ffiffl .-- flfl - - ( ffl ( flfl $ &flfl ( ,3 9 ffl ( flfl)ffflfl 3 ( ff flfl "& ( .-- - # +flfl ( )ff - ! $% &) - ff - !ff ffi . # 2.3# ffiffl ffl ( flfl ( 0 ffl (flfl ffl flfl ( fflffi flfl () &3 ff flfl (4 ffl( & 6.5# 6.3 & +"ffi 6.2 6* ff &! ff a1706-1790b 6.4 2_TB Physics M6.pdf 55 7/30/2015 3:08:35 PM ສ.ວ.ສ ສະຫງວນລຂ ິ ະສດ ິ

51 6.5 (1) ffl ( A flfl ( 0 ffl ( BC flfl flfl ( ffl ( A flfl (!4 BC $4 ffi B 4 # (2) $ffi C flfl ( ) , ffi C !& ff flfl (!4ff ( & flfl # ( (3) fflffi/ flfl ff (!4ffi B /- BC# 6.5" (1) ffl ( A flfl (!0 ffl ( BC flfl fl fl (!ffl ( A flfl 4 ( BC $4 ffi B 4 # (2) $ ffi C flfl (! ) , ffi C !& flfl ff 4 ( ff ( & flfl (!# (3) fflffi/ flfl ff 4 ( ffi B /- BC# !"#ffiffl$ % ffl ffi fi / A flfl (! $ flfl (! ffi 4 fi/ C & 6.6 ! /fi / B ! C 5/ fi/ A / &ffi 4 # flfl (ffi /4fi"&fi/ &ffi& ) flfl () &3 ff # ff- ffffi $%/ ! , ,-)&) , ffi/# ff 6.5 )flfl ff (/ffi B C B C B C B C C B : C " A A A A (1) (2) (3) (1) (2) (3) ++ + + - - - - - A B C " + + + +- - - - A - + + - - B C + + + + - - - - + + - - B C 6.6 ffi "&flfl (4fifi/ 2_TB Physics M6.pdf 56 7/30/2015 3:08:35 PM ສ.ວ.ສ ສະຫງວນລຂ ິ ະສດ ິ

52 3. &'#($ &4flfl -( - ( 3 & ff 4 - "&ffl ( flfl ( $% , ! -flfl 3 ( 2 ff ff ! 5)*ffi (Electros-cope). !5)*ffi $%/3 ff ffl&ffi&3 ff ff & //# 3.1 &&)* "#ffiffl$ !5)*ffi fi / - /fi / ffi 5 /0 " / ffi / !0ffi -/ & $ % $ & & 6.7# 4 ffl (flfl ( $% , ffl & ( fi/ # ffl ffl ( $ % /fi/ ffi & ffl ( flfl (# ffl)&4 ffl ( flfl 3 ( 2 ff ff )ffflfl 3 ( fffi' & ffifi/ ! ffl ( " # ffl ffl( fi / ffi & ffl (flfl () &3 ff fi/ # ffl ffl ( /fi/ ffi & ffl (fl fl 3 ( ff fi / # 3.2 &&)* +#), !5)*ffi + 5!$ - /5ffl ffi 65ffl ffi &5!$ ffi 4ffiff&"& &5!$ $% fi/ /5!$ ffi ! ( + ! &0- ffi& + ffi $(" $% & 6.8# 42 flfl +"& + ! $( " $# ffl ( flfl ( fi/ $ %4 ffiff&"& &5! $ ffi& +! # ffl)& 3 "&flfl ff (,ffi /)flfl ff ( ffi! 5)*ffi ! $ + !# , ffl ( flfl ( , 3 ff fi/ ffl $ +! $ %/ ffi & - flfl 3 ( ff flfl ( 4 ! & " ffl +! $" ( ffi & ffl (flfl 3 ( )ff & flfl ( 4 +! ! & 6.8# 6.7 !5)*ffi fi/ 2_TB Physics M6.pdf 57 7/30/2015 3:08:35 PM ສ.ວ.ສ ສະຫງວນລຂ ິ ະສດ ິ

53 4. ffi ! % %ffi !# ! 4.1 ffi ! ffl( ,flfl ffl (/$flfl ( -ffi ) $ % "&ffl 5/& ( /3 9 & & & ff ! , ffi& ffi $ % ! ! !/ ffl ( A flfl (! - ffl ( B a5!$ b flfl flfl (! / fi ffl ( B # ffl ffl ( B $flfl (! ffl /5ffiffi+, ! $ ffl( B flfl# 4.2 ffi !# ! ffl(, ,flfl ,$flfl ( -3 9 4& $ & ,,!ffffi( "ffi . , & ; ffi(# 1% ffl ( A flfl (! - ffl ( B a +4&b flfl ( ! ffl ( A ffl /5ffi ffl( B # ffl ffl ( B flfl ( ! , ffiffl/5ffi ffi+, / ffl ( B ,$flfl ( -# " & 6. 8 6.9 fl ffi ffifflfffl fi fi!" fl A B B B B 2_TB Physics M6.pdf 58 7/30/2015 3:08:35 PM ສ.ວ.ສ ສະຫງວນລຂ ິ ະສດ ິ

54 5. ffl -ffi ) flfl ff $( ffl ( ,fl fl -ffl () $%5 & flfl ( /4)fi ffl ( # /flfl (4fi"&ffl ( ,fl fl , ffi .ffi . , ffl ( ,fl fl fiffi $% $%-/ $% flfl /4 ( $%/ & 6.11# 6. ffl ,ffi # &$ ' ! / ffi& $ ffl( 3 & ff ! !) flfl ff ("' fl fl (! "&-!) 4! ! ( ,2 "' ! /0 ffl &" fifi ff '& flfl "& ( / fl fl (! ff&fi ! ff $fi5!flfl 2 ( $%/"# ffi ' flfl (! "& / & " ,flfl ( ff&fi 5!/ & &' ! $ &flfl "& ( ! fi ff $ flfl ( ,$%&$%/ ! &ffi fi ff 9 +# fflflfl ( $ 9 &,.' $ 6.12. " flfl ( +/ ffi & $ / 6.10 #ffl fi "$% ffiffl " fi ffifflff! fi !" : fffl #& ffl" ffl A B B B B 6.11 /flfl ( flfl (! &ff ffiflfl flfl ( 6.12 /flfl (4 2_TB Physics M6.pdf 59 7/30/2015 3:08:35 PM ສ.ວ.ສ ສະຫງວນລຂ ິ ະສດ ິ

55 " ' PVC 6.15 ( #!#ffi ! " $, ffi& & "' 9 ff # ffi 2 ff & ' 3 $+ ff/-ffl. flfl "&ffl ( flfl ( 4 -/ $%"& - ffl flfl ,3 )ff)&ffi -&fl + 6.13# 7. ffl& ffiffl & &* ffl- ( /5) $ , %/ )! 5) ff ffi 3 % &2/- ff /5-*) & )* & ! !)*& ff %ffi# !)*& ffi / ffi ff %ffi$%/ 2 !&& 2/ ffi$ %(5)fi'&-$5)fi '&# & " - )ff5)"&ffl ( ,5-*)& ! !)*& $ 5) "&ffl ( flfl# ffl (ffl ) ( ffl ( flfl ( ,5-*)&$ %/" ' !)*& ! ffl ( flfl (! $ , !)*&2 "$ ' %/5-*) &# ffl ffi&3 ( ffl ff 2 !&& ffl( $! )*&$ %( 5)"&ffl (fi'&-4 ff&5) ffl (fi' & ffl( ffiffi/!)*& fl fl ( ! ffl( !)*& flfl (! # )*%+#ffl fi #*)%+#ffl #ffl#*)%+#ffl fi 6.14 ff %/ ffi$%, fl ffi/fl ffi/ff 6.13 ffi-&fl + 2_TB Physics M6.pdf 60 7/30/2015 3:08:35 PM ສ.ວ.ສ ສະຫງວນລຂ ິ ະສດ ິ

56 , -%ffi)fflff +" ffi ! )*&+ $ %(-4 ff&, -%ffi )ff +" ffi ffi ffi/! )*& & ' flfl ( 6.15# , -%ffi)ff flfl (! " 6( / flfl (! 4, -%ffi)ff /!)*&6 ( /-&$ % & ffi &+$ 6(/ffi , -%ffi)ff -flfl ( # ffi 6 ( / &ffl ' " $ffi , -%ffi)ff 6.15"# ffffi &ffi "&!)*& 2 ff/!ffi flfl "& ffl( ! - ffffi ! )*&# )!& 6.1 ffi &flfl "&! ( )*& 5-*) & ! )* & 2 ffi ( / ! flfl ( ffi 5-*)& P 19 1,6 10 C 27 1,673 10 kg )* & n 0 27 1,675 10 kg !)*& e 19 1,6 10 C 31 9,11 10 kg 8. &ff &"- ) 5)"& ff ffl (42 flfl / ,5-* ) & ! !)*& " ! )*& 5)fi'&-$ 5)fi' & $5) ffiffi/!)*&/- 5) flfl ( ! 5) !)*&/- 5)flfl (! # & , ffl ( ffl( $ ffl(flfl ffi ( ff/ 2 ! && & ffl( ffl /5 $ ! )*& "&5),!ff (ffl $2 ! && "&!)*&ffi &" ' ffi$%( -ffffi $% 5)"&ffl (fi'&-ffi5)"& ffl (fi' & $ 5)"&ffl ( !)*&2 " ' flfl (! ffi 5)"&ffl (ffi/ !)*&- flfl # ffi ( ffi $%( 9 $ flfl ( , ffi &flfl ("'. -2& / /flfl ( ffl (fi' & -$ ffl (fi'& # 2_TB Physics M6.pdf 61 7/30/2015 3:08:35 PM ສ.ວ.ສ ສະຫງວນລຂ ິ ະສດ ິ

57 2 ff! +2 3 "&flfl ff (&."&! / & ffi . &ff # !$ % &/ , 1. Thales +&! &flfl 1 ( 2. flfl ( 3 1 3 ff ff 1 3. flfl (! a<b &ffi 9 # flfl ( a=b # "# flfl (! a<b # # flfl ( a=b ! flfl (! a<b# &# flfl ( $%! "'ffi 2 ! # 4. , -%ffi)ffffl "ffi ffi &flfl 3 ( 1 ff 5. flfl 3 ( ff ! flfl 3 ( )ff & 4 $/ & "'1 6. )ff flfl $( ffl( ff1 ff 1 7. & ff/- fl + fl $% ! fl&# 8. & ff/flfl (/ffffi ! )*&# 9. &! ffiflfl (# 10. -%ffi) + ff 2 " ffi flfl ( ! ! 4 ffl ( , , ffi &flfl , ffl ( 1 11. flfl , ! , ,flfl)& 1 12. 5)"&3 ( ff flfl -( 3 1 ff 13. !& flfl ffi fflff 5/ffl ( 4 3 ff A, B, C, D ffl +" ffi ! , ffi &# - A '& B, B '& C ! C / D. ffl 3 flfl ff "& ( ffl (& 4 - 1 # A B, C ) & D# "# A C, B D# 2_TB Physics M6.pdf 62 7/30/2015 3:08:35 PM ສ.ວ.ສ ສະຫງວນລຂ ິ ະສດ ິ

58 # A ) & B, B D. &# A ) & C, B ) & D# 14. ffl( A, B ! C flfl () &3 ff &3& ff ! & !& 1 ! 2# $ ffl ( B )ff flfl (! # ffl ffl ( A ! C ) ffflfl 3 ( 1 ff ffl( $$+ &! $&flfl ! ( ! flfl# A B flfl (! a<b C ffl( $$+ &! $&flfl ! ( ! flfl# A B flfl (! a<b C !&1 !&2 2_TB Physics M6.pdf 63 7/30/2015 3:08:35 PM ສ.ວ.ສ ສະຫງວນລຂ ິ ະສດ ິ

59 7 #, 1. ffi fl ffi flfl ffl 7.1. fffiffi !"#ff$ffl %& !'%( ! fiffi !"# ) ff $ ffl *fl+ ) ffifl flfi fl , $ -fifi # fi fl* fl + fl ffiffi. !"#flfi( $*flfi $/fl# fi$*flfl ffiffi fi , F (Charles Coulomb) F GH F flffi fflFGffffH fi ffi ffl! GH F"H# # , ffi , ffi , , 1 2 q q F k r (7.1) 9 0 1 9 10 4 k πε 2 2 N.m / C i /$ ffl 7.2 Charles Coulomb (1736-1806) ffl 7.1 , , ( 2_TB Physics M6.pdf 64 7/30/2015 3:08:35 PM ສ.ວ.ສ ສະຫງວນລຂ ິ ະສດ ິ

60 12 2 2 0 8,85 10 C /N.m ε fiffi ) 0 1 $fl, ffl 0 1 4 F πε 1 2 q q r (7.2) % ffi !fl2 3 ) fi() ) fl ffl , ffl )fi() fi " ffl ###fl' ffi ffiffi fi1 # fl fi 2 " ) # ( 1 - # fl ffl 1"# ffl ffl 7.3. 1 1 q 2 q )(*fi 1μC fi1 # fl 2m , 1ffi ffi, fi # ) ffl0 1 2 q q 1μC 4 r 2m 1ffi0 F ? /$1ffl0 1 2 q q F k r 1 2 q q ; r $ffl, 966 9 10 1 10 1 10 3 2, 25 10 N (2) F afi flbffl 2. # , fl , $3 ffi ) / fl ffl i ffl *!," ffl )0 0 1 4 F πε ε 1 2 q q r k ε 1 2 q q r (7.3) ε 1 (ffi ffi" 2 + + 1 q 1μC 2 q 1μC r 2m F F + + 1 q 2 q F1 F2 r + - 1 q 2 q F1 F2 r , 1 - # (, 1 "# ffl 7.3 ffl "###fl 2_TB Physics M6.pdf 65 7/30/2015 3:08:36 PM ສ.ວ.ສ ສະຫງວນລຂ ິ ະສດ ິ

61 "" 7.1 1 (ffi ffi * / 1' ffi 1 ε 1' ffi 1 ε fflfl 1 ffi /3 4 ffi 1,0006 ()1) 12,8 / 80 2-8 / 2,1 4-10 5#i fifl 2 4 2 !- 2 ffi ) ' 1,5m $& / /(*$fl +flffl 1 ' (ffifi / 80, ff (ffi !- "ffi ) fi $. $ffl $ " !-fi 2N , fi # ) ffl0 ε 80 4 F 2N 4 r 1,5m 1ffi0 1 2 q q ? /$1ffl 1 2 k q q F ε r 2 Fr q k ε F r ; ;ε k $ffl, 2 4 9 (2)(1, 5) (80) 2 10 C 200μC 9 10 q ffi% % ffi/fi 1. fi fiffi$(ffi ' fi ffl 3ffi (- , ffl 2. *flffi* fl ) 2C i fiffi ' (ffi ffl 6fflfl 1m , 1ffi(* (ffi ffi. 3. $ 9 3 10 C 9 5 10 C 6fflfl 20cm , 1ffi (* (ffi ffi. 2_TB Physics M6.pdf 66 7/30/2015 3:08:36 PM ສ.ວ.ສ ສະຫງວນລຂ ິ ະສດ ິ

62 4. 1ffi fl3fl$ffi+"(ffi ffl +5 1 # fiffifl ' + 5" fiffifi"5fi 11 5,3 10 m , / $ + 5" ) fi 19 1,6 10 C fiffifi"5 ) fi 19 1,6 10 C , 5. & fi ffl ffi* fl ) fi ' 6,25 nC. fl 61,7 cm, 1ffi(* fl (ffi ffl ffi, 6. & fi ffl ) +3,37 μC -8,21μC, ffl & fi ffl ffi 0,0626 N, # fl & fi ffl ffi, 7. ffl 7.4 6ffl ) A, B C ) 1 q 3μC i 2 q 1μC 3 q 4μC "/ , fl AB = 3m BC=3m. 1ffi( * # (ffi ) $ ) B. 8. (ffiffi ) ) fi 9 3 10 C ' ) flfl 5cm 0 , 16 1,8 10 N i (, 15 3,6 10 N , 6 1,6 10 N i , 5 3,2 10 N 9. fl # ff (ffiffififfifi "5 ) fi * / (ffififfifi "5 -$ * fi, / / $ 2 g 9,8m/s , 19 e 1,6 10 C 4 -31 9,1 10 kg me , 10. ffi+"+5 1 ) ffifl+ 5" ) ) 27 1,67 10 kg 19 1,6 10 C , fiffifi"5 ) ) 31 9,11 10 kg fi + 5"i fl fiffifi "5 + 5" 11 5,3 10 m , 1ffi0 , , (, ffl , + 1 q 3μm 2 q 1μm 3m + 3 q 4μm 3m ffl 7.4 A B C 2_TB Physics M6.pdf 67 7/30/2015 3:08:36 PM ສ.ວ.ສ ສະຫງວນລຂ ິ ະສດ ິ

63 11. )ffifi 4nC 4nC ) A B "/ fl fl 4cm $ffi, $ fi q = +2nC $ / ) " / )0 , q O fi(ffi # AB. (, q M )MA= MB = AB. , q P )PA AB PA = 3cm. 12. GffffH fi -8 Q = 20 10 C 1 ffi -8 Q = 5 10 C 2 GH%Ffi A ffi B fflF 10 cm& 1). fi Ffflflffi IFfl GffffH fi q = 4.108 C fl'Ffl GH FJ" Ffl"H# & q GHfi O F A ffi B& $& q GHfi (fl"PA= PB = AB = 10cm 2) fi q GHFI) flffi IFfl fi*Ffi F +& 13. )ffifi +"" ox , QA +18 nC $ Oi QB 27 nC $ 60 cm, ff" ffi QC $$" ox fi3 'ffi$ -, 14. KF, +ffifl 2 *fl ) m fi i q fi "* flff ( ' flfi &ffiflfl fi ( -, * fl ffifl ffl ffiffi +fl θ ) ffifl !fl a 7 x / 2 b x fl * fl ffi, 1ffi (ffi x , 15. KF, +ffifl 2 *fl ) m fi ff ($ ' - fl fi &ffiflflfi i 8 q 10 C fi , fl ffi fl ffl 6ffl$*fl ffifl2 ffi fi$3 flffiffi fi fl r 3cm , 1ffi ffi fi1 ffi (3 ' - ", $ ffl m 0,1g 2 g 10m/s , 2_TB Physics M6.pdf 68 7/30/2015 3:08:36 PM ສ.ວ.ສ ສະຫງວນລຂ ິ ະສດ ິ

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69 $ffl% 3 flOP,fflOP& x ' 3 Cμ MM x 0 & 5 Cμ MM x 40cm ,M POP q OPMff0flfifflMff-P&. "ffMfl"M1 fffi ABC6QO@]YP S9 F67C6k > >BDNeFQ]I?F L9QkPcAN= V OQIBQ ? q ]I=B<eC@ ? x \ XIB<ekQDQ7I<CNJ L P^D > 9q 6J >9 BD@AN]F V ?g F3 5 F 6 6 2 2 2 2 2 (3 10 ) (5 10 ) (0, 4 ) 5 3(0, 4 ) 1,2 0,24 0 1,2 1,44 0,96 0,6 0,775m 2 q q k k d d d d d d d ]FDOQX ? 9B 1,375m e7N 0,175m\ DN@@i X L? BJ9 89 6pBND<e< > 9@ d 1,375m \ &ff'' ffl()* 1. !flP"MOP&M-1 2. M &"!flP"MOP"MflOP"q & q IBQ]I^@P ? R7G6I@JQ]>9 ?BP@AL E Q e7N Q \ 3. MflP MRflP!&.OP 4. flOP 1 Q 4 Cμ & 2 Q 2 Cμ M QM. 8.122 flfflMO -M AB = 2 m & BC = 3 m M)- L0& 0" "MOP"M B kVP 8.10\ kVP 8.11. Q q Q q A B A B EB EB EA EA C C F3 F5 q y x d 40cm 3 Cμ 5 Cμ 2_TB Physics M6.pdf 74 7/30/2015 3:08:36 PM ສ.ວ.ສ ສະຫງວນລຂ ິ ະສດ ິ

70 5. DOQ6<F]L ?BP@AL E 1 Q 2 Cμ e7N 2 Q 2 Cμ IBQmDOQ V9 AEF A e7N B Z9BQ CL@2cm \ AQX >9 GF]7XIB<6Y 9 L? <YOQ J>9Q ]?BJ 89 6CFJ8 89 AEFOmV96XQCBQ G9 AB\ 6. DOQ6<F]L ?BP@AL E 1 Q 4 Cμ e7N 2 Q 4 Cμ IBQmV9 DOQAEF A e7N B Z9BQCL@ 4cm \ AQX >9 F]7 G XIB< 9 6Y L? <YOQJQ]>9 ?BJ 89 6CFJ8 89 AEF P mV9Z9BQABC A ]7UN 3cm jFUHSI 9B AP AB mV96<LF A \ 7. A >9QeC67C=B<Y ? R?<V@J 89 ^Z^@=B=N7BQce7 ? I=? <^D S9 9Z?OQZIBQ^Z 9 ?X >PHI@? 7F ]?BP@AL E Q aC b ]?BP@AL EJ>F DOP q aC b XIB<ekQ F a N b J>9Q]?B E a N/Cb ]7UNZBQ9 d amb 1 4 4 10 C 6 1 10 C 0, 2N d 2 4 4 10 C 6 2 10 C 5 2 10 N/C d 3 4 8 10 C 6 1 10 C 0, 4N d 4 4 8 10 C 6 2 10 C 5 4 10 N/C d 5 4 8 10 C 0,6N d 6 4 8 10 C 6 1 10 C 5 1 10 N/C 2d 7 4 8 10 C 6 2 10 C 2d 8 4 8 10 C 0,1N 2d 9 4 4 10 C 5 8 10 N/C 0,5d 10 4 4 10 C 0,5d 8. 6O67LC=nQC> B7R Q6XL O@J S9 89 F?IUXIB<]I 4×106 m/s _9B@6Y >?B^@JQ]>9 ?BDN6p8cJ89 <8 XIB<6Y L? <6J >9 BCLP 910 V/m ^@JGFJBQFWICP6D L L? @XIB<ekQJQe< >9 6Z9 [LC\ AQX >9 F]7 G 9 O LF=B67 L9Qce7Nc]7UNJBQ6F@YOQ6O67 8 LC=nQ^@` > IQ]7UNCB@6X 9 O@J S9 89 __O@9 YOQ<@q k L V?I 9B6O67LC=nQ<> <I@DB@6J 8 >9 B 31 9,1 10 kg e7N <8]?BP@AL E 19 q 1,6 10 C \ 9. j7ZNoIU< 9 @o> h9 Q<87 LFDNp84cm <8]?BP@AL PICc6 E S9 O6XO@U S9 BU6< ? F]L ?B P L@AE q=10 – 9C ABCONDQ]Y<BJ > 89 AEF M Z9BQABCoBo? IUC 9 >< 20cmi =OQ]F ? ? Q2 B A C Q1 3 m 2 m kVP 8.12 2_TB Physics M6.pdf 75 7/30/2015 3:08:36 PM ສ.ວ.ສ ສະຫງວນລຂ ິ ະສດ ິ

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73 3. ffi! ! # *ff& 2 *( &fi# - 0( "- ffi ! ! # . *&fifflfi " ffi! ! # !$" ' & fl A ! B , *ff& ffl&) A 2& fi!$ ! ffl & &) B 2& %fi%fi*(&fi ( - / 9.3.). *"! ff 2%fi*( &fi * - &# fi+ & * &(" *% %fi &# % ffi ! ! # !$" ' & fl A ! B . &# & " & (" # 2*%& %fi*(&fi* - 2$ &, fl & %fi*(&fi* - fiffl " & (" *% %fi &# , ' "% ) &*% *(&fi- (& %fiffi & ! ! # !$" ' & fl A ! B . 0 ffl fi " ! # %fi'2+ fl & %fi"0 *fffl & ffl&) 'fl ( A ) 2*(& &fi ! ffl - &) %fi!$*(&fi! - ( /9.3.%) ' "% ) &*% *(&fi- (& %fiffi & ! ! # %fi'fl $ 1- (& %fiffi & ! ! # !$" ' & fl A ! . 4. !# %fi*# 'fl ff ' ! *# ' fl q 2+& ! 3'fl & / P $ ' * & # ' fl#! r . !# 3'fl & / P &*' * # ' fl q %#: q V k r (9.3) 9 22 k 9 10 N.m /C ( %fi! & # * / *&fi#!$ - & r ff *&fi' " - ! & # * ( !. & & , ! # !"&*' $ 1 / 9.3 ffi! ! # % q r V / 9.4 P 2_TB Physics M6.pdf 78 7/30/2015 3:08:37 PM ສ.ວ.ສ ສະຫງວນລຂ ິ ະສດ ິ

74 *# ' fl'# ) ( *& & ffi "ff - ( %fi! # &*' * # ' fflfl !fi & ( : - 1 n i i i q V k r (9.4) ir #!$ & ' & i q #$ 'fl &* *. 0 # ' $ ' fl 3 ffl ffi "%fi+" & *4 !# 3%& / 2 () & ! *& ! # 3& / & ffi "%fi+" & , 3 'fl#!$ & / ' + & " & () #! ffl & / (9.3) #! $ ffl & fi ' 'fl 2' %fi+" & #*0 ' * fl *. ffl"3 & 1: ' fi$ ! & %fi* # ' fl q &#!$ 1m ' '# fl ' fl. . 'fl & %+ # ' fl -6 2 10 C %. 'fl & %+ # ' fl -6 -2 10 C " : & & /: -6 1 q 2 10 C ; -6 2 q -2 10 C; r 1m fi$ : V ? . fi$ !# %fi*# ' fl -6 1 q 2 10 C 2 ) / : q V k r ( & 1 q ff k ! r 2/ & #: 9 6 9 10 (2 10 ) 4 1,8 10 V 1 V %. fi$ !# %fi*# ' fl -6 2 q 2 10 C 2 ) / : q V k r ff ( & 2 q ff k ! r 2/ & #: 9 6 9 10 ( 2 10 ) 4 1,8 10 V 1 V 2_TB Physics M6.pdf 79 7/30/2015 3:08:37 PM ສ.ວ.ສ ສະຫງວນລຂ ິ ະສດ ິ

75 5. # 'fl 2 *(&fi - # ' fl q ' 'fi fl #%#$ fi ' +fl & & ! # *& V 2 ) * & qV ffl&) # ' ! fl ) 3 2 & / ff! / * &*fi " ff! & # &* 2# ' fl*fi. W qU (9.5) ! ) 2 *( &fi - # ' fl q & / 9.5. ' ' fl C *0' fl D * & ##! CD = ! #!$ !$" & & fi%" AB d %fi(" F 2 *& # ' fl q ffl !"%fi *(" # (#! & & : W F cosfi ffl& cosfi d W qEd (9.6) $1-W qEd qU (9.7) - ! ) *( &fi - # ' fl q & / 9.6 ' ' fl C *0' fl D ffl * 2#) 2$ ) " 3& !$" & / % & " A ! B $1 5+ ff%+ ! 2 ' 0 "- * & * & ! #! *( - &fi - & ffl * (" %fi# 'fl q 3/!$" & fi+ & : & 1 2 ; ;.... n ! #!*(&fi - & ffl !"*(" : & 1 2 ; ;.... n dd d . %fi(" F qE 2 *& # ' fl q ffl !"%fi*(" # ' ( fl #! & & : 1 2 cos cos ... cos WF F F fifi fi n ffl& cosfi d 1 2 1 2 ... ( ... ) W qEd qEd qEd qE d d d n n (9.8) - fl # ' flq *fi #" 32 & / & # E & / 9.7. 0 ffl fi *( &fi - # ' fl q ' 'fl A $ B "(" #"( ( & ( a 0 ) fflfififi ffl & %+ * & qE 2 % (" *% &# , A B C D fi E C D d A B d / 9.5 / 9.6 / 9.7 2_TB Physics M6.pdf 80 7/30/2015 3:08:37 PM ສ.ວ.ສ ສະຫງວນລຂ ິ ະສດ ິ

76 &*% ' *( &fi - & %fi# ' ' ' fl fl A #$ B : & W Fd qEd A B (9.9) ( & / (9.9) 2& (9.2) #ffi ! ! # !$" fi & & !$(: - U Ed (9.10) ffl"3 & 2: ffi!$ ( & %+ " $ /& & #! 20cm ffi! ! # !$" ffi & & fi 400V . ' fi$ : & . (" *% %fi &# !$" ffi & fiffi & . & %. 0 *fi*! ffl " -31 9 10 kg ! # ' fl -19 -1,6 10 C $fl 1 fifi' ffi!& '*( &fi - & "(" *! &*& 2? " : & & /: d 20cm 0, 2m ; UBA 400V ; -31 m 9 10 kg ; -19 qe -1,6 10 C fi$ : . E ? , %. a ? . fi(" *% %fi &# 2 ) / : U E d ( & U ! d 2#& : 400 2000V/m 0,2 E %. fi(" *!&%fi *(&fi - & %fi# ' fl 2 ) / : F ma * & F qE . , %( 24 - #& qE ma ( & q E; ! m 2#& : -19 -31 1,6 10 (2000) 9 10 ( ) a 14 2 a 3,5 10 m/s 2_TB Physics M6.pdf 81 7/30/2015 3:08:37 PM ສ.ວ.ສ ສະຫງວນລຂ ິ ະສດ ິ

77 ( 0 ! ) *{ $ 1. !# $ & ? 2. ffi!$ " ( & %+ /& "#!$ & 1,2cm ffi! ! # 480V . 2$* # ' fl -19 1,6×10 C " 2*(& & ffi!$ fi. 0 " (" & 2 *& # ' fl ( *& & 2? 3. *fi*!ffl3 !$" & / ffi!$ " ( & %+ /& "#!$ & 1cm. ffi! ! # 100V . ) 2$ -19 e 1,6×10 C! -31 9 10 kg me . ' fi$ : & . (" *% %fi &# . %. (" *!&%fi *(&fi - &# ' . fl 4. 'fl A ! # 2V ! 'fl B ! # 6V . 0 ffl fi *( &fi- # ' fl 6 2 10 C ' 'fl A #$ ' fl B . 0 " # & & ffi ! fifi( *& & 2? 5. # ' fl 8 3 10 C " 3'fl & / B * &$ ' & 'fl A 25cm ; 'fflfi" # ' fl Q & *4 $ ' ' & fl A *& 2 ffl 2 *& *!4 %fi/+" & ' &'* 2$'fl *( A ! # * ? / "/ !& 4 %fi +" & * & 20 cm (/ 9.8). 6. # ' fl -8 1 10 C ! -8 1 10 C %+ *& " $ & #! 3m . 0 & fi# 'fl -9 1 10 C *(&fi - ' ' fl A $ ' fl B 0 " # & & ffi! fifi( *& & 2? (/ 9.9) 7. *) # ' fl 4 ffl" *% #" 2*& &- fi!fl%fi /'fflfl! & % " 0,1m & / 9.10 ' fi$ & %fi# ' fl4 . ) 2$ 6 q 10 C . A B 3m 1m 1m 1 q 2 q / 9.9 20cm A B d ? 5cm % / 9.8 / 9.10 0,1m 0,1m q 2q q 2q A B C D 2_TB Physics M6.pdf 82 7/30/2015 3:08:37 PM ສ.ວ.ສ ສະຫງວນລຂ ິ ະສດ ິ

78 10. *(&fi - fi# 1. *(&fi - fi# 1.1 *(&fi - fi# *(&fi - fi# & ! & 2 *( & &fi - fi# & ffi!$ & ff * &* "0 fl # ) fifi" %+ % !$" ff" & " &) # ) (*fi*! ffl) * &fi & / fi $1- *' $ 1- ",... 2ffi" " 'fi # *(&fi - fi# & / 10.1. 0 ffl &) fi%fi*( &fi - fi# 2& fi% " &) # (&, 4) # ,...) *(&fi - fi# 'ffl# *fi*!ffl'#!"ffl " 3 %& / "ffl # ! ! % " ffl# "ffl & ffl & %+ * & & / 10.1. *ff& ) 2$ % "ffl # "* # ' fl" ! %"ffl # !* # ' fl!. 1.2. (" fi%fi*( &fi - fi# gZ57c?9VWW D 5E?`1h D 23Z 8 T=n 17 b 9gZ57;575=;3; 8 7]32 Y e759VWW5UD T94b \?Y5VZC9h D YZ; ;52B UdT Y92U23= Y TUVWW5 D U gY`g85. ZT=nb[l8`;575=\6TUVWW5UD 94T bV=DXj5A Xjf [D?A179E8 lD 96UhT YZgY`g85 C \> e8 `6B59==Y DZA;=: < q C U (10.1) C 1789gZ57cD?9VWW5E?`Z D T=nb 7SXYZ[8ZA\]T9W5o5= ( F). / 10.1*(&fi - fi# C +q -q U . ffl&)*(&fi - fi2" 'fi %.! %"# ' " fl %"# ' fl! ffi!$ & "0 fl*fi*! ffl ffifi ! & / ffi& 1 ffl (. *(&fi - fiffi !$ & 2_TB Physics M6.pdf 83 7/30/2015 3:08:37 PM ສ.ວ.ສ ສະຫງວນລຂ ິ ະສດ ິ

79 gZ57cD?9VWWD5\c Y8 56TU?T=h5;8Z923XZ85`VWW5UD T94b6TUdY92YU23=TUVWWD5 E?`ZT=nb. gZ57cD?9VWWD57SXYZ[8ZA\]T96<2Y`h B8@Z9 (C/V) Xjf W5o5= (F). 1 W5o5= 1789gZ57cD?9VWWD5E?`ZT=nb9B5VWW5cD S87SdY92YU23=TUVWWD5 1 @Z9 XjT`456V=D_TUVWWD5UT94b 1 6<2Y`. ?b]3g<9E?`W5o5=7S=T8`9 SD : 1 7e@6oW5o5= (!F) = 10-6 W5o5= (F) 1 95@9W5o5= (nF) = 10-9 W5o5= (F) 1 ]S@6W5o5= (pF) = 10-12 W5o5= (F) 1: \g f8 ?`cD?9VWWD57Sg85 70!F ffl&) 2& ffi !! ! # 20V . 4Y8`>?6VWW5UD T94bE?`\g f8 ?`cD?9VWWD5. : ; e8 `cS8_<D : -6 C 70 F = 70 10 F ! ; U 20V fi$ : q ? 2 ) / : q C U -6 3 q 70 10 20 1,4 10 C 1.3. (" fi# ffl 5 & \g f8 ?`cD?9VWW5 17 D 89?]36?9c5` b VWW5>39 D =[e l8` C>D\i f8 ?\6TUVWW5 UD T94. b \g f8 ?`cD?9VWW57D SXj5A>39e=\> T8 9: \g f8 ?`c?9 D VWW51d D 89iq`, \g f8 ?`cD?9 VWW5[D 8ZA7Y9, \g f8 ?`cD?9VWW5c D B86Y7. C9UY=9 SD 4365Z\n 8 e`iq` \g f8 ?`cD?9 2 >39=ge f\g f8 ?`cD?91d89iq` 123 \g f8 ?` cD?9[8ZA7Y9. 1) flflffiffl (" fi%fi*( &fi - fi# ff* *(&fi - & fi"fiffi !$" & %+ % ""! fi &) # ) ffl!ffi & !$ & * fi- &A *& , " / 10.2 *(&fi - fi# ffl 5 & +q C 70 F! -q U 20V 2_TB Physics M6.pdf 84 7/30/2015 3:08:37 PM ສ.ວ.ສ ສະຫງວນລຂ ິ ະສດ ິ

80 $ & "#! d ; (" *% &# 3!$" & / & fiffi* & & E . ffi! ! # !$" fi & ffi!$ & : & U Ed (10.2) \g f8 ?`cD?9VWWD5V=D;3;Y7]32e759VWWD5UT94 b 0 q EA " (10.3) \7 f8 ?1c9g85 U ! q C;8;<= (10.1) 43V=: D 0 A C d " (10.4) * & 12 2 2 0 " 8,85 10 C /N.m 2: \g f8 ?`cD?9iq`;D5`E lD 9=DZA;?`1d89@2X3E3[596T9\> e8 `7S\9 fD ?cS81h823[D5 1789 A = 200cm2 *&fi%- "fi 123 Z5`X85`6T9 0,4cm. nD5\i e8 9hB8 ;?`E YD Z\g f8 ?`cD?9C;8dY92U23= Y TUVW U = 500V. '(& #! & : 6. gZ57;575=cD?9E?`\g f8 ?`cD?9. E. VWWD5UT94bC9\gf8 ?`cD?9 123 gZ57\ETD7E?`c Y8`VWWD5. ff : ; e8 `cS8_<D : A = 200cm2 ; d = 0,4cm ffU 500V fi$ : . C ? %. q ? ; E ? 6. >?6gZ57;575=cD?9E?`\g f8 ?`cD?9. 95C> B D;<=: 0 A C d " 4 12 12 2 200 10 (1)(8,85 10 ) 42 10 F 0, 4 10 C 42 pF. E. >?6VWWD5UT94bC9\gf8 ?`cD?9 123 gZ57\ETD7E?`c Y8`VWWD5. - VWWD5UT94bC9\gf8 ?`cD?9 9B5C>D;<=: q CU q = 421012 500 = 21109 C = 21 nC - gZ57\E TD 7E?`c Y8`VWWD5 9B5C>D;<=: U E d E / 10.3 *(&fi - fiff B 2_TB Physics M6.pdf 85 7/30/2015 3:08:37 PM ສ.ວ.ສ ສະຫງວນລຂ ິ ະສດ ິ

81 2 500 0, 4 10 E = 125103 V/m. 2) flflfi gZ57cD?9E?`\g f8 ?`cD?9VWWD5[8ZA7Y9cS87S2T=;3rS r , 23=TUVWWD5a<8[D5[8ZA7Y943\c Y8 56TU q V k r 1c9C;8;<= (10.1) 43V=D;<=ge=V28gZ57cD?9E?`\g f8?`VWWD51789: r C k (10.5) k 1789;B5]3;e=6<2Y` (k = 9109 Nm2 /c2 ) 3: [ZA7 8 Y9[ l8 `7S2T=;3rS 20cm .4 Y8 `>?6g85gZ57cD?9E?`\gf8?`cD?9VWWD5 [8ZA7Y9. : ; e8 `cS8_<D : r 20cm = 0,20m fi$ : C ? 2 ) / : r C k 11 9 0,20 9 10 F 9 10 C 2. ffl&) *(&fi - fi# * 4" 659C>D\g f8 ?`cD?9VWWD5C9hYZ4e` \i f8?CXDV=DgZ57cD?9VWWD5 123 dY92YU23=TUVW WD5456B T=h57gZ57hD?`659 \i e89V=DhB8\g f8 ?`cD?9Xj5A@hC;86T9a<8C9ZY`4?9VWWD5\]T9 1UUh B8 2q96T9 123 h B8 E3[596T9. 2.1. ffl&) *(&fi - fi! 659h B8 \g f8 ?`cD?9VWWD51UU2q96T9 1789659h B8 \g f8 ?`cD?9VWWD5 @=A\?Y5E YD Z2YU E?`\g f8 ?`cD?9VWWD5@hcS[l8`75h B8C;8EYDZUZ6E?`\g f8 ?`cD?9VWWD5@hcS;?` 12DZ\?Y5 EYDZ2YU\g f8 ?`cD?9VWWD5@hcS;?`h B8C;86TUE YD ZUZ6\g f8 ?`cD?9VWWD5@hcS;57 \_T=1UU9TD9 hB8V]4Y9gYUcb6\g f8 ?`; ;b=cD5AhB8EYDZUZ6E?`\g f8 ?`cD?9VWWD5@hcS[l8`C;86TUEYDZUZ6E?` UB8VWWD5 123 E YD Z2YUC;8EYDZ2YUE?`U B8VWWD5 = T8 `_<U 10.5. / 10.4 r r 20cm 2_TB Physics M6.pdf 86 7/30/2015 3:08:37 PM ສ.ວ.ສ ສະຫງວນລຂ ິ ະສດ ິ

82 659VXjE?`VWWD5UT94b Q 43\6S=E lD 9c9cT S \7 f8 ?hB8EYDZE?`\g f8 ?`cD?9VWWD5C;8 6TUU B8VWWD5 cS87SdY923=UVWW T D5 U *( &fi# - ffl&) !fi # ) & ffi! ! # (-& " '* & 2$% "*( &fi - fi# ffl!fi & %"+ & * # ' " ! fi fl + & *# ' fl!. , *( &fi - fi# ffl&) !$ fl 1#/ (#! & & : 1) # ' !" fl Q !": Q 133 qqq (10.6) 2) ffi! ! # U !": U UUU 133 (10.7) 3) (" fi# C !": 123 1111 CC C C (10.8) 2.2. ffl&) *(&fi - fi%+ 659h B8 \g f8 ?`cD?9VWWD51UUE3[596T9 1789659h B8 \g f8 ?`cD?9VWWD5 @=A\?Y5 EYDZUZ6E?ÙT9=5\g f8 ?`cD?9VWWD5752Z76T9a<84b=C=[l 8` 123 \?Y5E YD Z2YUE?ÙT9=5 \g f8 ?`cD?9VWWD5752Z76T9a<84b=C=[l8 `. ;b=cD5AhB8EYDZUZ6E?`\g f8 ?`cD?9VWWD5C;8 6TUEYDZUZ6E?ÙB8VWWD5 123 E YD Z2YUC;8EYDZ 2YUE?Ù B8VWWD5 = T8 `_<U 10.6. 659VXjE?`VWWD5UT94b Q 43\6S=ElD9 cT9cS \7 f8 ?hB8EYDZE?`\g f8 ?`cD?9VWWD5C;86TUU B8 1 q 2 q 3 q U1 U2 U3 C1 C2 C3 U Q Q _<U 10.5 \gf8?`cD?9VWWD5hB82q96T9 1 q 2 q 3 q UUU 123 C1 C2 C3 U Q Q _<U 10.6. \g?`c f8 D?9VWWD5hB81UUE3[59 2_TB Physics M6.pdf 87 7/30/2015 3:08:37 PM ສ.ວ.ສ ສະຫງວນລຂ ິ ະສດ ິ

83 VWWD5 cS87SdY923=TUVWW5 D U *(&fi - fi# ffl&) %+ $ fl 1#: 1) # ' fl Q !": Q 133 qqq (10.9) 2) ffi! ! # U !": U UUU 133 (10.10) 3) (" fi# C !": CCC C 123 (10.11) 4: 4`>?6X5gZ57c Y8 D?9VWW52Z7E?`\g D f8 ?`cD?9VWWD5E3[5= 10 F! 123 20 F! C96B239S\g?`c f8 D?9cT`;?`h B8 1UU2q96T9 123 E3[596T9. : ;e8`cS8_<D: 1 C 10 F! ff 2 C 20 F! >?6X5: C ? 2! ) ffl&) ! ! %+ . - C96B239S\g?`c f8 D?9cT`;?`h B8 1UU2q96T9. 95C> B D;<=: 1 2 111 CCC 1 1 10 20 C 6,7 F! - C96B239S\g f8 ?`cD?9cT`;?`h B8 1UUE3[596T9. 9B5C>D;<=: CCC 1 2 10 20 C 30F 3. ff! 2*( &fi - fi# \7 f8 ?h B8 ;?`d9E?`\g Y f8 ?`cD?9VWWD5C;86TUU B8 VWWD5 \g f8 ?`cD?9\6S=he=VWWD5 AD?9Z85 U B8VWWD5V=D;Y8`VWWD5U94T bCXD168EYDZ\g f8 ?`cD?9 VWWD5. h576Y=\69_T6;5i32T``59, 1_``59=T8`65Z7 8 Sg85\c Y8 56TUi32T``59c S8 ;3;Y7a<8 C9\gf8 ?`cD?9VWWD5. nD5\_Y5C>D;5A95VWW B D5h B8 23XZ85`;?`EZE?`\g YD f8 ?`cD?9VWWD5, Q1 Q2 C1 C2 U Q Q Q1 Q2 C2 U Q Q C1 2_TB Physics M6.pdf 88 7/30/2015 3:08:37 PM ສ.ວ.ສ ສະຫງວນລຂ ິ ະສດ ິ

84 \g f8 ?`cD?9VWWD543]8?AVWWD5??6 \_T=CXD631;VWWD51289d59;5A9 8 5VWW B D5 123 1d8gZ57_D?9??6a<8C9;5A9B5VWW59D TD9. C9E3937T9]8?AVWWD5??69 TD 9 1789]8?A i32T``59c;3; S8 Y7VZDC9\Z257T9he=VWWD5 i32T``59c;3; S8 Y7VZDC9\gf8 ?`cD?9VWWD5 C & # ' fl q 123 dY92YU23 =TUVWWD5\c Y8 56TU U 436B59==Y DZA;<=: 2 11 1 2 22 2 q W qU CU C (10.12) W 1789i32T``59VWWD5 7SXYZ[8ZA\]T9a<9 (J ). 4. "0fl *fi*! ffl 456659cY=2?`\i e8 9iYUZ85 nD5\?Y51d89=S\? \2T6hoe6 (Dielectric) 1c9U8?9?565=C9\gf8 ?` cD?9 @=ACXDgZ576Z D5È?`1d89=\?\2 S T6hoe6 9D?A6Z 85V2A3X85`23XZ85`;?È YD Z\g f8 ?`cD?9 (a < d ), 7T9\_T=CXD\6S=7SdY92YU23=TUVWWD523 XZ85`;?ÈZ\g YD f8 ?`cD?99D?A2Y` X 7jf 659] S 8q91]` gZ57\E TD 7E?`c Y8`VWWD5a<823XZ85`65È?`;?` EYDZ\g f8 ?`cD?9 4 l8 `\_T=CXD7SgZ57;575=cD?9 Xj5AE lD 9. 9 TD 9;31=`Z85 659\?Y51d89=S\?\2T6 hoe6 ;?=C;823XZ85`;?È YD Z\g f8 ?`cD?9 ;575= \i S87VWWD5U94T bCXD168\g?`c f8 D?9V=DXj5AE lD 9 Xjf \Z YD 5?S6a85`[ l8 `Z85\g f8 ?`cD?9;575=UT94bVWWD5V=DXj5AE lD 96Z5\= 8 S7. (" fi%fifi% "*( &fi - fi* &fifi % 0 0 A C d " (10.13) (" fi%fifi% "*( &fi - fi * &fi- "0 fl*fi*! ffl% A C d " (10.14) ffi!$ # ' fl! ! U / 10.8 ffi* &fi*fi - "0 fl *fi*! ffl% !$" fiffi & & !$%fi*(&fi - fi. Dielectric Q+ Q2_TB Physics M6.pdf 89 7/30/2015 3:08:37 PM ສ.ວ.ສ ສະຫງວນລຂ ິ ະສດ ິ

85 " (" & # %fi"0 fl*fi*! ffl*fi (10.13) $ 2$(10.14) '#: 0 k " " k & ) *fi*! ffl (Dielectric constant). fiffl "!$" & (" & fi# *&fi- "0 fl*fi*! ffl % *fi " & “ ) *fi*! ffl”. & 0 " " k (#! (" & fi%fi*( &fi - fi &"#*ff & (#! ffl & / & : 0 0 A A C kC k d d " " (10.15) 0 fi % ' k 1 ffl"3 & 5: *(&fi - fiff & 0- % "fi & !$%+ * & * fi- & ffl!+ & & A = 200cm2 % "fi ! " $ & 0,4cm. 0 *ff & ffl&) fi%"*( &fi - fi2 ffi& ! ! # U = 500V. '(& #! & : . (" fi%fi*( &fi - fi. %. # ' 2*( fl &fi - fi, (" *% %fi &# ! ff! &*(&fi - fi #" : ; e8 `cS8_<D: 2 A = 200cm ff d 4cm ff k 1; U 500V >?6X5: . C ? ff%QEW ?; ?; ? . (" fi%fi*( &fi - fi. /10.9 ffi* &fi*fi - "0 fl*fi*! ffl% !$" fiffi & !$%fi*( & &fi - fi Q Q Q Q Q Q Q Q V Ed 0 0 = E0 d E V Ed = E # E0 2_TB Physics M6.pdf 90 7/30/2015 3:08:37 PM ສ.ວ.ສ ສະຫງວນລຂ ິ ະສດ ິ

86 2 ) / : 0 A C k d " 4 12 2 200 10 (1)(8,85 10 ) 0, 4 10 C 12 C 42 10 F 42 pF. %. # ' 2*( fl &fi - fi, (" *% %fi &# ! ff! &*(&fi - fi #" . 2 ) / : Q = CU Q = 421012 500 = 21109 C = 21 nC 2 ) / : E = U d 2 500 0,4 10 E = 125103 V/m. 2 ) / : W = 1 2 2 CU W = 1 2 421012(500)2 = 5,2510 6 J ( 0 ! ) *{ $ 1. *(&fi - fi $ & ? 2. *fi*! ffl $ & ? 3. i32T``59c;3; S8 Y7VZDC9\gf8 ?`cD?9VWWD5 123 d92Y YU23=TUVWWD5 1789E9alD <8 6TU ]32e759C=? ?3ceU5A. 4. 4Y8`>?6X5]32e759VWW5UD T94bcS8;56\E YD5V]C9\gf8 ?`cD?9, \7?\g f8 f8 ?`cD?99 TD 9nf6h B8 C;86TUdY92YU23=TUVWWD5 1kV . (CXD_<D\g f8 ?`cD?97Sg85\c5 Y8 12 300 10 F ) 5. [8ZA7Y9@2X37S2T=;3rS\c Y8 56TU 20cm 7SVWWD5UT94b 410 6C a<8\]f?69?6 E?` [8ZA7Y9. 4 Y8 `>?6X5gZ57\E TD 7E?`c`VWW Y8 D5 123 23=TUVWW5C91h D 8236239 B S =T8`9 SD : 6. V2A3 10 cm X85`4564b=C465` O E?`[8ZA7Y9. E. a<8\]f?69?6E?`[8ZA7Y9. g. V2A3 80 cm X85`456\]f?69?6E?`[8ZA7Y9. 2_TB Physics M6.pdf 91 7/30/2015 3:08:38 PM ສ.ວ.ສ ສະຫງວນລຂ ິ ະສດ ິ

87 A B 2cm / 10.10 6. \g f8 ?`cD?9?T9[ l8 `7Sg85gZ57cD?9\c Y8 5 8C \7 f8 ?E TD 9=DZA?565=, 4`6 Y8 B59Y=g85gZ57 cD?9 \7 f8 ?7T9E TD 9=DZA=S\?\2T6hoe6, \> e8 `hYZgY`g85=S\?\2T6hoe6\c Y8 56TU 6. 7. \g f8 ?`cD?9VWWD5iq`, ]36?U=DZA;?`1d89@2X3Z5`E3[596T9 1h8231d897S \9 fD ?cS8 4 2 200 10 m Z5`X85`6T9 0,4cm E TD 9=DZA?565=. 6. 4 Y8 `ge=V28gZ57cD?9E?`7T9. E. nD5\g f8 ?`cD?99 TD 9h B8C;8dY92YU23=TUVWWD5 500V . 4 Y8`>?6X5VWW5UD T94bcS8;3 ;Y7VZDC9\gf8 ?`cD?9 123 g85gZ57\E TD 7E?`c Y8`VWWD5a<823XZ85`65` E?` 1d9@2X3. 8. UT9=5VWWD5UT94bhB8V]9SDnf6Z5`h57169 x =T8`9 SD : 1 q 2C 3/& fi & x 20cm ; 2 q 3C 3/& fi & x 30cm; 3 q 4C 3/& fi & x 40cm . ' fi$ ! & # !"& 'fl x 0 . 9. C9_<U 10.10 CXD;?`1d9@2X3V= 8 DhB8C;81h823; YD9E?`U B8 VWWD5 120V cT`;?`]8q`9 TD 9nf6E TD 965`=DZA1Z=2D?7;<9 A565=. 4 Y8 `>?6X5: 6. gZ57\E TD 7c Y8`VWWD5cS8a<823XZ85`65`;?`]8q`. E. gZ571_`c S8 63cYUh B8 \?\2T6hoY`cS8a<823XZ85`65`;?` ]8q`. g. i32``59c T S8C>DC9659\gf8 ?9AD5A7T9456]8q` B X5 A . `. gZ57VZ\?\2T6hoY`\7 f8 ?\ne`]8q` A iB=S. 10. \g f8 ?`cD?9VWWD5;?`?T9 C1 123 C2 \7 f8 ?h B8 2q96T9 12DZh B8C;86TUU B8VWWD5cS87SdY92YU 23=TUVWWD5 12V, 1h823?T9437SVWW5UD T94b 24!C. nD5\?5\g Y f8 ?`cD?9cT`;?` 75hB8 E3[596T912DZ\?Y5V]hB8C;8UB8VWWD5 ?T9\6 Y8 5, VWWD5UT94b2Z7cT`;?`\g f8 ?` cD?91789 108!C. 4Y8`>?6X5g5 gZ57c 8 D?9 C1 123 C2. 11. C9_<U 10.11 C1 = 4 !F; C2 = 6 !F, C3 = 15 !F. 4Y8`>?6X5d92Y YU23=TUVWWD5 123 VWWD5UT94 b C9 1h823\g f8 ?`cD?9. CX D UAB = 150 V C3 C2 C1 / 10.11 A B 2_TB Physics M6.pdf 92 7/30/2015 3:08:38 PM ສ.ວ.ສ ສະຫງວນລຂ ິ ະສດ ິ

88 12. 4 Y8 `ge=V28gZ57cD?92Z7E?ÙT9=5\gf8?` cD?9 C1 = C3 = C5 = C7 = 4!F 123 C2 = C4 =C 6 = 1!F cS8hB8\]T9ZY`4?9 =T8`_<U 10.12 . 13. CXDZY`4?9VWWD5 = T8 `_<U 10.13 _<DZ85: UAB =30V;C1 = C3 = C 5 =1!F; C2 = 4 !F 123 C4= 1,2 !F. 4 Y8 `ge=V28: 6. gZ57cD?92Z7E?`cT`rY=ZY`4?9. E. dY92YU23=TUVWWD5C91h823\g f8 ?`cD?9. 14. \i e8 9\?Y5\g f8 ?`cD?9iq`;?`1d89 Z5`CXDX85`6T9 5 cm (" 1). nD5?\2S T6hoY`\7T= [l8`\g f8 ?9c S8 h57\; TD 9gZ571_`456EZ[ YD l8 È?`\g f8 ?`cD?9V]X5?S6E YD Z[ l8 È?`\g f8 ?` cD?9=DZAgZ57VZ 6 3 10 m/s . 4 Y8 `>?6X5gZ57\E TD 7c Y8`VWWD5a<823XZ85`65È?` ;?È YD Z\g f8 ?`cD?99 TD 9. 15. \g f8 ?`cD?9VWWD5 3 ?T9, 1h823?T97Sg85 120pF V=DhB8C;8VWWD5 500V XjT`4569TD9 \i e8 9\?Y5iZ67T975h B8 2q96T9 4 Y8 `>?6X5: 6. VWW5UD T94bE?`1h823\g f8 ?`cD?9. E. dY92YU23=TUVWWD52Z7E?`rZ=\g f8 ?`cD?9. g. i32``59c T T`rY=E?`23UYU\g f8 ?`cD?9. C7 C2 C4 C5 C6 / 10.12 C1 C2 C3 C4 C5 / 10.13 A B C1 C3 2_TB Physics M6.pdf 93 7/30/2015 3:08:38 PM ສ.ວ.ສ ສະຫງວນລຂ ິ ະສດ ິ

89 ff III # 11 # 1. # # *( & &fi - & %fififlff # # % * &fi- *( &fi - %fi*fi*!ffl*! 2!$ $1- *(&fi - & %fi fi fi (" ! ! ) 2 !! . # & fi *ff & & ) %fi# & *(&fi - & %fi# ' ". fl & , 2 # ) !$ %fi# '& *(&fi - & %fi *fi*! ffl. * # / & !2"! & fi2+ & fi2 ffi& ffl 5 & &*% . # !2 & # ) * 2$ # ) fi% ffi& & &2$) *ff! (" fi * : *ffl & !, *ffl # , fi#… # !ffi& !! ' & "+ ) & ( !! # ' ) fl &2$) * %& "# (%"! ! % "") ffi *( %fi# . ) !*" & # & *$& 1# ffi& # *$& 1%fi # . 2 2$ *$ " & *$& 1# & & * ffi!" & fl2 33 - 2$/ " & # . ffl2fi & " & *( !! % ffffl 2 & ! ) & !! &) # ) *& . * &fi# - ffi & "0 fl& # ) # ) &) *ffi (" fi* & . 2. (" *% %fi# *&fi- # ' fl' "+ ) & $1- ! # ' fl Q & !ffi& * & fi- &+ ffl %fi"0 fl # ) 2+& $"+ "*"! & t 2"0 ' fl # !ffi& . ! & # ' fl&*(&fi - & ffi + & ffl &%fi" - 0 fl # ) 2+& $"+ "*"! * & & *0fi 2 ) %fi# *ff& *fi" : ( & " *% # , ! " I . 2_TB Physics M6.pdf 94 7/30/2015 3:08:38 PM ສ.ວ.ສ ສະຫງວນລຂ ິ ະສດ ິ

90 Q I t (11.1) $"+ "(" *% & # I * /!/" $1- fi ( ) A ) 0 # (" *% I #ffi " & 0 fl # ) & * fi- &+ ffl A , (" + +%fi# & "ff & "ff ffl / !fl& : I j A (11.2) j (" + + & %fi# 2 A/m (fi ffl ) &) !) fi) ! # ' fl Q *(&fi - & *42"0 fl # ) & * fi+- ffl A ffl "2*"! t . # &*% ' *( &fi - & %fi# ' fl*fi " & # (Direct Currentffl DC). "0 fl& & fi2$# ' *(fl &fi - & ffi *fi & " : & "0fl # ) . 2!$# ' fl3 $ & 1"$1 , ffl"& & ff# ' fl' "+ ) & *& & *(&fi - &*!#. # ' fl& *(&fi - &*!# *fi " ff & $ # ) . 0 2$ n (" + + & %fi*fi*! ffl*! $1- ' "*fi*! ) ffl*! ffl&) $"+ " & ) ! %fi # ) , v (" #"*( & &fi - & %fi*fi*!ffl*! ! e # ' %fi*fi*! fl ffl. fl 2#!*"! t ' "*fi*! ) ffl*! *(&fi - & ffi * & fi- &+ ffl %" A %fi # ) $1- ' "*fi*! ) ffl*! 2 # ) & ) ! *& n A $1-nvtA. & , ! # ' %fi*fi*! fl ffl* & : Q nevtA (11.3) ( %fi & I 2ffi (11.1) 2& ffi (11.3) #: I nevA (11.4) ffl"3 & 1: # +& * ffi & 0,002 cm # ' fl!ffi& & 300 C ff 2*"! 4 ! ' "*fi*! ) ffl 22 2 10 ffl"/m 3 . 0 " (" & *% # , (" #"%fi*fi*!ffl ! (" + + %fi # !ffi& fflfi & * & 2? 2_TB Physics M6.pdf 95 7/30/2015 3:08:38 PM ສ.ວ.ສ ສະຫງວນລຂ ິ ະສດ ິ

91 " : & & /: 5 d 0,002 cm 2 10 m ; Q t 300C; 4min= 240s; 22 n 2 10 ffl"/ m3 fi$ : I ? ; v ? ; j ? - fi$ (" *% # 2 ) / : Q I t 300 C 1,25 A 240 s - fi$ (" #"%fi*fi*!ffl 2 ) / : I nqvA I v nqA (1) *fi- &+ ffl %fi 2 A r $ 5 2 2 12 2 2 10 ( ) 3,14( ) 314 10 m 2 2 d $ ! 19 q e 1,6 10 C ( & I; ; n e ! A 2& (1) #: 22 19 12 1,25 2 10 1,6 10 314 10 v 9 1,25 1004,8 10 v 5 12,44 10 m/s - fi$ (" + +# !ffi& fflfi & 2 ) / : I j A 9 2 12 2 1,25 A 3,98 10 A/m 314 10 m 3. *(&fiffl - # *(&fiffl - * fifi fl " & (" ffl 2$ " 'fi *ff &- fi# $1- ffi! ! # 2$*4 " 'fi *( &fiffl - 2 (: *( - &fiffl - (( ! *( & &fiffl - ( # & . 3.1 ff"ff !$" & I ! U 0 3 fi & / %fi # ) ffi! ! # '* ) # !ffi& & ) , (" *% %fi# I 2 # ) %& ffi !! # U ffi !fi2" 0 fl # ) $1 fflffl & ff " : & % ( (& ffl "2+ & &* *fi!2$ "fi !$" ) & I ! U ffl ffl ! ) I f U( ) . Georg Ohm " ( *3! * ffi/ fi) & ) # " 2_TB Physics M6.pdf 96 7/30/2015 3:08:38 PM ສ.ວ.ສ ສະຫງວນລຂ ິ ະສດ ິ

92 !fi ff "ff !$" & I ! U 2" 0fl # ) &* !$" & I kU ff "ff & / 11.1 2 k fi& ffl "( & ( & &) 2"'fi & ' fl"0 fl # ) *fi " : ffl & " # ) (Electric conductance) $"+ "* & (Siemens) ! " S *&fi- !fi !! # *ff& ff " ffi & %fi !fi (& ( - ! ! &* fiffl " & ffl " # ) k &* *fi!*0 ( !fl ffl # %fi"0 fl # ) *fi" : ( & " ffl # %fi"0 fl # ) . 1 R k 3.2 *fi !) " 0 fl # ) &* !$& 3/fifl & $ff/ &) & , fiffl "!$" & & ffi! ! # U (" *% # & !ffi& & ( & &) & . ( & &) & *fi " : (" ffl & # , ! " R. U IR (11.5) ffi (11.5) * ffi %fi *fi; (" ffl # R $"+ " & * "ffl&) fi $ ) 1- *fi" & fi ! ! & %. 3.3 *(&fiffl - ( ( & *(&fiffl - * "{ fl fi fi & + ( ( / -&) fi5 ( (" & ffl ( ( 2 & ! $ 1- 2"'fi# ! 2 0 fi( & (" ffl . 0 6 0 * *(&fiffl - (" 4 & : 0 U I I=kU / 11.1 2_TB Physics M6.pdf 97 7/30/2015 3:08:38 PM ສ.ວ.ສ ສະຫງວນລຂ ິ ະສດ ິ

93 01 ffl"*! 1 02 ffl"*! 2 03 ffl"( / 04 ffl"*!( ffi& % & 05 fifl$ff / 0 01 ffl"*! 02 ffl"*! 03 ffl"( / ( ffi& & (%) fifl$ff/. (ppm/k ) 0 0 1 250 ffl ) 1 1 10 ±1% 100 2 2 102 ±2% 50 3 3 103 ±3% 15 *$1-fi 4 4 104 ±4% 25 %" 5 5 105 ±0,5% 20 6 6 106 ±0,25% 10 " (fi & ) 7 7 107 ±0,1% 5 * 8 8 108 ±0,05% 1 % " 9 9 109 ( ) 10-1 ±5% * 10-2 ±10% &) ±20% ffl"3 & 2: *(&fiffl - # & 0 !& fl& : 03 0: , , ) ! &) ( 3 20 10 20% 20 %& %& k 20% ) 04 0: %", , ! ( ( ) 2 56 10 ±5% 5600 ±5% % % ) 1 2 3 4 5 2_TB Physics M6.pdf 98 7/30/2015 3:08:38 PM ສ.ວ.ສ ສະຫງວນລຂ ິ ະສດ ິ

94 ( 0 ! ) *{ $ 1. '2$ & (" *% # , *) * # ff fi %(" *% / # . 2. "0 fl # ) "2? & 3. 'fi* & fi2%fi - *fi ff fi % ? / 4. 0 ("ffl "2? 5. ' fi$ ' & "*fi*! ) ffl & !ffi& # & fi+ & 25 fl 1s *ff&- fi 2$* # 0,75A . 6. # 0,02A !ffi& & *) +& * & * ffi & 1mm *&fi- *fi*!ffl! ffi& & "(" #" 2,7m/s. ' fi$ ' & "*fi*! ) ffl &*(&fi - & ffi & *) ? 7. 2"'fi# +& fi"*( &fifi - & (" ffl # 2 100 ffl&) !(" ffl # fi 2,900 ! *(&fi"fi - ( & & #1,5 V. 0 " # & & !ffi& " & 'fi ( *& & 2? 8. 'fi& ! & " ) *fi (" ffl # ' 0!& fl& : 1) 04 0: , , ! ) . 2) 04 0: , , ! &) . 3) 05 0: , , ( , ) ! ( ) . ) 4) 05 0: , , , ( ) ! ) ffl . ) 2_TB Physics M6.pdf 99 7/30/2015 3:08:38 PM ສ.ວ.ສ ສະຫງວນລຂ ິ ະສດ ິ

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