modul

FADILLA CAHYA NIRMALA 8

APERSEPSI

Pernahkah kalian menghubungkan baterai dengan sebuah kabel yang terhubung kedua
kutubnya? Apa yang terjadi? Panas bukan? Jelaskanlah bagaimana hal itu bisa terjadi!

Jawab:

It.u....m...e..r.u..p..a..k..a..n....a.d...a.n..y..a....k..u..a..t...a..r.u...s...y..a..n..g....m...e..n..g..a..l.i.r....p..a.d..a....r..a.n...g.k...a.i.n.....t.e.r..s.e..b..u..t......K...u..a.t ... a..r.us
lis..t.r.i.k....a.d..a..l.a..h....u..k..u..r.a..n....j.u..m...l.a..h....m...u..a..t.a..n...l.i.s..t.r.i.k...y..a..n..g....m...e..l.e..w...a..t.i...t.i.t.i.k....m....a.n..a....p..u..n....p..e..r...s..a.t..u..an
w.a..k..t.u......M...a..k..i.n...k..u..a..t..s.u..a..t.u...a..r.u...s...l.i.s.t.r..i.k..,...m...a..k..a...m...a..k..i.n....b.a..n..y..a..k....m...u..a.t..a.n...l..i.s.t.r..i.k...y..a..n..g...m...e..n..g..a..lir
da..l.a..m....s..t.a.u..a..n...w...a..k..t.u..n..y..a..............................................................................................

MOTIVASI

Dalam keseharian kita sangat sering menggunakan alat kelistrikan. Peralatan apa saja yang
menggunakan sumber listrik arus searah (DC)? Bagaimana kita mengetahui bahwa alat
listrik itu menggunakan sumber arus searah (DC) atau bukan?

Jawab :

.B...e..b..e..r.a..p..a...b..e..b...a.n....e..l.e..k..t.r..o..n..i.k..a...y..a..n...g...m...e..n..g..g...u..n..a..k..a..n...a..r.u...s..l..i.s..t.r.i.k....D...C....d..i.a..n..t.a..r..a.n...y..a..:..L...a.m....p..u...L...E...D.
.(.L...i.g..h...t..E...m...i.t.i..n..g...D...i.o...d..e..).,...K...o..m...p..u...t.e..r.,..L...a..p..t.o..p...,..T...V..,...R...a..d..i.o..,...d..a..n...m...a..s..i.h....b..a..n..y..a..k...l..a.g...i....S...e.l..a..i.n...i.t..u
.l.i.s..t.r..i.k.....D...C.....j.u..g...a....s..e..r.i.n..g.....d..i.s..i.m....p..a..n....d...a.l..a..m......s.u..a..t.u.....b..a..t.e..r..a..i.,...c..o..n...t.o..h..n..y..a.....s.a..j..a....b..a..t.e..r..a.i....y..a..n..g.
.d..i.g...u..n..a..k..a..n...u..n...t.u..k....m...e..n..g..h..i..d..u..p..k..a..n....j.a..m.....d..i.n..d..i..n..g..,..m....a..i.n..a..n....m...o..b..i.l..-.m....o..b..i.l.a..n....d..a..n...m....a..s.i..h...b..a..n..y...a..k
.l.a..g..i.....A...r.u..s....s.e..a..r.a..h....a..d..a..l.a..h...a..r.u...s...l.i.s..t.r..i.k...y..a..n..g....n...i.l.a..i.n..y..a....t.i.d...a..k...b...e.r..u..b..a..h.....A...r..a..h....p..e..n..g..a..l.i.r..a..n ...a.r..u..s
.l.i.s..t.r..i.k..n..y..a......h..a..n..y..a...p...o..s.i..t.i.f...a.t..a..u.....h...a.n...y..a...n..e..g..a..t.i.f...s..a.j..a.......U...n..t.u..k......m...e..n..g...e..t.a..h..u..i.n..y...a.....k..i.t..a.....d..a..pa.t
.m...e..n..g...g..u..n..a..k..a..n...a..m....p..e..r.e..m...e..t.e..r...a..t.a..u...s..e..b..a..g..a..i..a..l.a..t..p...e..n..g..u..k..u..t...a..r.u..s...l.l.i..s.t.r..i.k..n..y...a.................................

PERMASALAHAN

Mengamati
Amatilah video pada link berikut ini https://youtu.be/80ed8lbKN5U
Setelah mengamati video tersebut, isilah LKPD dibawah ini dengan cermat dan teliti.

FADILLA CAHYA NIRMALA 9

Menanya

BBuuaattllaahh dduuaa ppeerrttaannyyaaaann yyaanngg bbeerrkkaaiittaann ddeennggaann ppeerriissttiiwwaa yyaanngg bbeerraaddaa ppaaddaa vviiddeeoo!!
Jawab :
Jawab :

1…. B…ag…ai…ma…na…k…ea…daa…n …aru…s …lis…trik…k…eti…ka…du…a …ata…u l…eb…ih…res…is…tor…di…su…sun…p…ara…le…l? ……
1. Bagaimana keadaan arus listrik ketika dua atau lebih resistor disusun paralel?
2.....2..……............BB…….........aa......gg……......aa......ii……...mm.........a...a……...nn......a...a……...k...k...a...a……...h...h........n.……n......ii...ll...a……...a...i...i...h...……h...a...a...m...……m.........b...b……...a...a...t...ta...……a...n...n......……p...p...e...e...n...……n...g.....g....g……...g...a...a...n……...n...t...it...i...……k......k..e....e……t.....i.t...ki...k...……a...a......b...……..b.a......an...……...ny......ya......……ak......k.....r.……...er......es...i...……s...si...t...s...o……t.....o.r......ry……......y..a....n...a……...n..g.......g……...d......id...r...……i..a.r...n...a...……...gn......kg...……...ak......ia...?...……i.....?.......……............

………..
D…ari…pe…rta…ny…aa…n-…pe…rta…ny…aa…n y…an…g t…ela…h…dia…ju…ka…n, …bu…atl…ah…hi…po…tes…is …me…ng…en…ai…………
Dpe…arrmi…as…pael.ar.thaannyatearns-epbeurtt!anyaan yang telah diajukan, buatlah hipotesis mengenai
pJae…wrma…bas…:ala…ha…n …ter…seb…ut…! …………………………………………………………………
.J11d2.a...a.…………w.rJR..iudJ.a…e…….tum.abis.mtr.i……….ili:s.ka.ltt.haoi………..ct.h.r.iam.k.………ybm..uaac..………uanan..tbagg.a.………ta.na.hn.n.………agy..may..………n.ab.g.na.……….gt.ma..………mn.a.n.s.………a.yu.s.aku.……….k.lk.e.………e.kb..ei.t……….hi.tt.ii.………bk.t.ie.k.………cs..aac.r.b………a..aab..n………k.a.gan..………n.gs..am.………s.m.a.e.………ma.n..ead.……….re.di.n.m………e..gn.a.a……….g.na.a.………r.nju.u..s………jm.u.l..mil……….sa..thl.r………a.i.hmk..………..muy..a………a.u.tn.aa.………g.nt.a.l.………yne..ab..y………n.i.hag..n……….k.kg.e.………e.ck.l.ui.el.al..ur..a. r
.....2434b3...............a....…………….....tNR.....e.....RNbR.....ra……………..i....a....aleeai.....at.....lisse…………….....eai.....iias.r....issh.....iak...……………..tts.a....hiooa.....tm.....aroanr...…………….......mkry.....byl.....a...……………..eayaab.....n...nb..ntaa.....a.....……………gingtl.....hn.a...e.g.....hnb.h....……………bp.....a.h....ia..e...ehmp.....ma……………s...n.......mebab.....gb.n....……………re.....agba......gs..t...taa.....a……………aga.....nt.....nrana......t.....……………nnn...in.......yt...n..yai.....……………a.....yka.....a.....aal.....……………lke.....ne.....lba.....be.....……………sni.....bi.....he.....hi.....……………ms.....hb.....ke.....ea.....k………m……e.....sk.....ec.....aa.i....……………ic..r...nkl.....i.....ali....a.……………k....n.k..ka...e.....a.k....a……………c.....kn.....nai.....el....n.……………m.....cm.....s.....ime...e..l……………e.....h...n..ne.....s..i...e……………n..e..e.n.....r.r.he...gi.....i……………mr....i.gm.....ni.....ma....a.g……………...a.......gk...a.a.....a.……………a.r...u.....ra.u.....aur.....sk……………....t.us.....u.....las.....li……………a.....ris.....ltu.s....ti.....rt……………s....s.r.a...i.t....k.irry.....k……………....u.i....a.yk.....sy....n.a…………….....y....ag.ny.........na.g……………....a.dn....g...n...i....lg.……………...h.ge.l....e...ba.l.....be……….……...si......hbii....d...hl..i……………...k..ik...h..h....b.ae.....……………...ab..nec........s..sei.....il...a.s.l........kra..........ra........n..

Mengeksplorasi

Alat dan Bahan
Adapun alat yang diperlukan antara lain :

1. Laptop / smartphone

2. Aplikasi virtual laboratory PhET

Prosedur Percobaan
1. Buka aplikasi PhET melalui link berikut https://phet.colorado.edu/sims/html/circuit-

construction-kit-dc/latest/circuit-construction-kitdc_en.html

2. Susun rangkaian seperti berikut, dengan menggunakan kondimen yang diberi highlit
berwarna kuning.

FADILLA CAHYA NIRMALA 10

3. Beri nilai sesuai yang diperlukan

4. Pasang alat ukur tegangan dan kuat arus listrik sesuai kebutuhan.
5. Perhatikan kondisi nyala lampu pada masing-masing lampu
6. Catat tegangan dan arus yang mengalir pada masing-masing hambatan pada tabel

pengamatan.
7. Ulangi langkah-langkah dengan 2 rangkaian yang berbeda.

FADILLA CAHYA NIRMALA 11

Hasil Pengamatan

Tuliskan hasil pengamatanmu dibawah ini dan gambarlah rangkaian yang Anda rangkai

No Gambar Rangkaian Nilai Hasil Kondisi lampu
Komponen percobaan

1 R1 = 10 V1 = 20 V Menyala

R2 = 10 V2 = 20 V
R3 = 10 V3 = 20 V

V = 20 V I1 = 2A

I2 = 2A

I3 = 2A

Itotal = 6A

2 R1 = V1 =

R2 = V2 =
R3 = V3 =
I1 =
V=

I2 =

I3 =

Itotal =

3 R1 = V1 =

R2 = V2 =
R3 = V3 =
I1 =
V=

I2 =

I3 =

I total =

4 R1 = V1 =

R2 = V2 =

R3 = V3 =

V = I1 =
I2 =

I3 =

I total =

FADILLA CAHYA NIRMALA 12

Analisa Data

1. Bagaimana karakteristik rangkaian paralel?
...K...a.r..a.k..t.e..r..i.s.t.i..k...d..a.r..i..r.a..n..g..k..a..i.a..n...p..a.r..a.l..l.e.l...a.d..a..l.a..h...a..r.u..s...y..a.n..g...m...e..n..g..a..l.i.r...p..a.d..a...m...a..s..i.n..g..-.m...a..s..i.n..g............
...c..a.b..a..n..g...t.e..r.g..a..n..t.u..n..g...n..i.l.a..i..t.a..h..a..n..a..n...y..a.n..g...d..i.p...a.s..a..n..g...p..a.d..a...c..a..b..a..n..g...S...e.d..a..n..g..k..a..n...t.e..g..a..n..g..a..n...p.a..d..a........
...m...a..s.i.n..g..-..m...a..s.i.n..g...b..e..b..a..n...l.i.s.t..r.i.k...s..a.m...a...d..e..n..g..a..n...t.e..g..a.n..g..a..n...s..u..m...b..e..r....................................................
....................................................................................................................................................
2. Perhatikan kondisi lampu dan arus yang mengalir pada lampu tersebut ! Jelaskan hubungan
antara nyala lampu dengan arus yang mengalir pada lampu!
..D...a.l.a..m....a..r.u...s..l.i.s..t.r.i.k...t.e..r..d..a.p..a..t..h..a..m...b..a..t.a..n...l.i.s..t.r.i.k...y..a..n..g...m...e..n..e..n..t.u..k..a..n..b...e.s..a..r..k..e..c.i..l.n..y..a..a..r..u..s..l.i.s..t.r.i.k........
..S..e..m...a..k..i.n...b..e..s.a..r..h..a..m...b..a..t.a..n...l.i.s..t.r.i.k..,..s..e.m....a.k..i.n...k..e..c..i.l..k..u..a..t..a..r.u..s..n..y..a.,...d..a.n...s..e..b..a.l.i..k..n..y..a....O..l.e..h...k..a..r.e..n..a.....
..i.t.u..,..j.i.k..a...a..r.u..s...l.i.s.t..r.i.k...y..a..n..g...d..i.b..e..r.i.k..a..n...s.e..m...a..k..i.n...b..e..s.a..r...m...a..k..a..n..y..a..l.a...l.a..m...p..u..n..y..a...r.e..d..u..p...a..t.a.u................
..b..a..h..k..a.n...t.i..d..a.k...m...e..n..y..a..l.a..,..d..a..n...s.e..b..a..l.i.k..n..y..a...j.i.k..a...k..u..a.t...a.r..u..s..y..a..n..g...d..i.b..e..r.i.k..a..n...k..e..c..i.l..l.a..m...p..u...a..k..a.n............
..m...e..n..y..a.l.a...l.e..b..i.h...t.e..r.a..n..g..................................................................................................................
3. Buatlah grafik hubungan tegangan dan arus listrik

I

V

Kesimpulan

Dari percobaan yang dilakukan dapat disimpulkan bahwa:

...R..a..n..g..k..a..i.a..n....p..a..r.a..l.e..l...m...e..m...b..u..a..t...l.a..m...p..u....y..a..n..g....t.e..r.h..u..b..u..n..g....d..e..n..g..a.n.....b..a.t.e..r..a.i....d.a..n....s..a..k..l.a..r...d..a..p..a..t..
...m...e..n..y..a.l.a....d..e.n..g..a..n....b..a..i.k....A...p..a..b..i.l.a...b..o..h..l.a..m.....l.a..m...p..u...p..e..r.t.a..m...a....d..i.m...a..t.i.k..a..n..,..b..o..h..l.a..m.....l.a.m....p..u...k..e..d..u..a...
...m...a..s.i.h....m...e.n..y..a..l.a.....B...e..g..i.t.u....p.u..l..a...s.e..b..a..l.i.k..n..y..a....H...a..l..i.n..i...b..i.s.a....t.e.r..j.a..d..i..k..a..r.e..n..a...k..e..d..u..a...l.a..m...p..u...b..e..r..a.s..a..l..
...d..a.r..i..s..u..m...b..e..r..l.i.s..t.r.i.k....y..a..n..g...s.a..m...a.....S...e.h..i.n..g..g..a...b..i..s.a...d..i.m...a..t.i.k..a..n...a..t.a..u...d..i.n..y...a.l.a..k..a..n...m...e..m...a..k..a..i..s..a.k..l..a.r...
...l.a..m...p..u.........................................................................................................................................
....................................................................................................................................................
..................................................................................................................................................

FADILLA CAHYA NIRMALA 13

LATIHAN SOAL

1. Tiga buah hambatan masing-masing 2, 3, dan 6 disusun secara paralel, lalu

dihubungkan dengan beda potensial 3 volt. Tentukan :

a. Besar hambatan pengganti atau hambatan total;

b. Besar arus pada rangkaian

Jawab :

Diketahui : R1 = 2

R2 = 3

R3 = 6

V = 3 volt

Jawab :

a. 1 = 1 + 1 + 1
1 2 3

= 1+1+1
236

= 6+4+2
12

1 = 1



b. = = 3 = 3

1

2. Kawat penghantar dihubungkan dengan baterai 6 V sehingga mengalirkan arus listrik 0,5

A. Jika kawat dipotong menjadi dua bagian sama panjang dan dihubungkan paralel satu

sama lain ke baterai, maka arus yang mengalir sekarang adalah . .

Jawab :

Hambatan kawat sebelum dipotong
= = 6 = 12

0,5

Hambatan setelah dipotong menjadi dua
1 =1+1

6 6

= 3

Arus listrik setelah hambatan disusun
= = 6 = 2

3

FADILLA CAHYA NIRMALA 14