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MODUL • Fizik TINGKATAN 5
Keelektrikan

2
Electricity

Objektif pembelajaran / Learning objective

• Menganalisis medan elektrik dan pengaliran cas. / Analysing electric fields and charge flow.
• Menganalisis hubungan di antara arus elektrik dan beza keupayaan.
Analysing the relationship between electric current and potential difference.
• Menganalisis litar bersiri dan litar selari. / Analysing series and parallel circuits.
• Menganalisis daya gerak elektrik dan rintangan dalam. / Analysing electromotive force and internal resistance.
• Menganalisis tenaga elektrik dan kuasa. / Analysing electrical energy and power.

Medan Elektrik dan Pengaliran Cas
UNIT 2
2.1 Electric Fields and Charge Flow

Terminologi Penerangan Formula
UNIT 2
Terminology Explanation Formula
Cas elektrik, Q Hasil darab bilangan elektron dan cas bagi satu elektron Q = ne
Electric charge, Q The product of the number of electrons and the charge of one electron

Arus elektrik, I Kadar cas yang mengalir Q
Electric current, I The rate of charge flow I = t

Medan elektrik / Electric field
1 Medan elektrik boleh diwakili oleh garisan berarah yang disebut garis-garis medan elektrik atau garis daya elektrik.
An electric field can be represented by a series arrow lines called electric field lines or electric lines of force.

2 Medan elektrik mempunyai kekuatan yang tinggi apabila garis daya elektrik disusun rapat antara satu sama lain.
The electric field is the strongest when the electric lines of force are close together.

3 Garis-garis medan elektrik tidak akan bersilang dan bermula dengan cas positif dan berakhir dengan cas negatif.
The electric field lines of force never cross over and they start on positive charges and end on negative charges.

4 Garis-garis medan elektrik ialah kuantiti vektor kerana mempunyai magnitud daya dan arah .
The electric field lines of force are vector quantities as they have both magnitude and direction .

5 Arah medan elektrik ditentukan berdasarkan arah daya pada cas positif yang diletakkan dalam medan elektrik.
The direction of the electric field is determined by the direction of force on a positive charge, placed in each electric field.

Cas
Arus =
Masa
Charge
Current =
Time

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