Malaysia SPM Form 5 Physics - Electricity

1.1 Electric Charge
1.2 Electric Current
1.3 Potential Difference
1.4 Ohm's Law & Resistance
2.1 Circuit - Resistance
2.2 Circuit - Current
2.3Circuit - Potential Difference
3.1 Electromotive Force (E.M.F.)
4.1 Electrical Energy and Power

Potential Difference

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1) Which of the following is the unit of electrical potential difference?
I. V
II. J/C
III. Nm/C
IV. J/s

Choice 1
I
Choice 2
I and II
Choice 3
I, II and III
Choice 4 IV


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2) Which of the followings show the correct connection of the voltmeter to measure the potential difference across the resistor?

Choice 1
P only
Choice 2
R only
Choice 3
R and Q only
Choice 4 R, Q and S only



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3) Potential difference between two points is


I  the work done to move 1 electron across the two point.
II  the work done to move 1C of charge across the two point.
III  the energy dissipated when 1 C of charge is moved across the two point.
IV  the work done to move 1 proton across the two point.


Choice 1
II and III only
Choice 2
I and IV only
Choice 3
I only
Choice 4 II only


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4) The work done to move 3C of charge from point A to point B is 12J. What is the potential difference between point A and B?


Choice 1
1V
Choice 2
4V
Choice 3
15V
Choice 4 36V


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5) The potential difference between two points is 2.5V. What is the work done in moving a charge of 30 mC between the two points?


Choice 1
0.075J
Choice 2
0.75J
Choice 3
7.5J
Choice 4 75J


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electromagnetism notes