BAB 7 F2 ELEKTRIK SOALAN

BAB 7
Keelektrikan dan
Kemagnetan

Electricity and Magnetism







Tenaga keupayaan Tenaga kinetik Tenaga bunyi Tenaga cahaya & haba
Potential energy Kinetic energy Sound energy Light & heat energy

Ammeter Voltmeter
Ammeter Voltmeter

Daya tarikan dan daya tolakan antara cas elektrik
The attractive force and repulsive force of electrical charges

Fenomena kilat / Lightning phenomenon

Geseran antara badan dengan tempat duduk di dalam kereta menghasilkan elektrostatik
The friction of the body with the seat in the car will produce electrostatic

Apabila dia memegang pam dengan badannya bercas, electron akan dipindahkan ke muncung pam
When that person holds the pump with a charged body, the electrons are transferred to the nozzle.
Percikan static dapat menyalakan wap petrol yang keluar daripada pam
The sparks of the static may ignite the petrol fumes that are come out of the pump

Setelah keluar dari kereta, Suresh perlu menyentuh badan keretanya terlebih dahulu
After coming out of the car, Suresh needs to touch the body of his car

Supaya electron dipindahkan ke kereta terlebih dahulu
So the electrons will be transferred to the car.
Dan dibumikan
To be earth



Cerah / Bright
Malap / Dim

Semakin pendek wayar, semakin cerah nyalaan mentol / Semakin Panjang wayar,
semakin malap nyalaan mentol
The shorter the wire, the brighter the bulb

1/R = 1/3 + 1/3

= 2/3

R = 3/2
= 1.5 Ω

I = V/R
= 3 / 1.5
= 2A

Q

Membekalkan voltan yang konsisten / kecerahan mentol yang sama
Provides the consistent voltage/ the same brightness of the bulb



Klip kertas tertarik kepada paku / The paper clip is attracted to the nail
Daya electromagnet / Electromagnetism

N
S

^^^^^^^^^

Magnet tertarik kepada solenoid / The bar magnet is attracted to solenoid
J menjadi kutub utara / J becomes the north pole
K menjadi kutub selatan/ K become the south pole