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

The SPM Physics Workbook is developed under the One-School.net Free Books Project. The content of this book is strictly follow Malaysia SPM (Sijil Pelajaran Malaysia) syllabus. The aim of this project is to provide a complete electronic supplementary network for students to develop self-learning skills by breaking the spoon-feed rituals and to encourage them to compile educational information from the Internet.
1) Which of the following is the unit of electrical potential difference?
I. V
II. J/C
III. Nm/C
IV. J/s

 I I and II I, II and III IV

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

 P only R only R and Q only R, Q and S only

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.

 II and III only I and IV only I only II only

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?

 1V 4V 15V 36V

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?

 0.075J 0.75J 7.5J 75J