Practice MCQs For For Static Electricity, Current Electricity, D.C. Circuits and Practical Electric Circuitry

This quiz contains practice questions for GCE ‘O’ level topics: Static Electricity, Current Electricity, D.C. Circuits and Practical Electric Circuitry. There are explanations for some of the questions after you submit the quiz. If you could not figure out why a particular option is the answer, feel free to drop a comment below or ask a question in ‘O’ & ‘A’ Level Discussion section of the forum. If you wish to contribute questions to this quiz, please contact us.

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1. The potential difference between the ends of a conductor is 12 V.

How much electrical energy is converted to other forms of energy in the conductor when 100 C of charge flows through it?

0.12 J

1200 J

8.3 J

120 J

2. Which of the following devices' main purpose is NOT to provide safety to users of electricity?

Earth leakage circuit breaker.

Transformer.

Miniature circuit breaker.

Fuse.

3. Which factors will both increase the resistance of a wire in a circuit?

	Size of wire	Temperature of wire
A	Longer	Lower
B	Shorter	Lower
C	Thicker	Higher
D	Thinner	Higher

D

A

C

B

4. An electric kettle is plugged in and switched on. The fuse in the plug blows immediately.

Which single fault could cause this?

The wires connected to the plug are too thin.

The live wire and neutral wire connections in the plug are swapped around.

The earth wire is not connected to the kettle.

The live wire touches the metal case of the kettle.

5. How could the unit of potential difference, the volt, also be written?

J / C

C / J

C / A

A / s

6. The terminals of a battery are joined by a length of resistance wire. Which change, on its own, will increase the current through the battery?

using a thinner wire of the same material and the same length

connecting an identical wire in series with the first one

using a shorter wire of the same material and the same thickness

covering the wire with plastic insulation

7. X and Y are lamps with filaments made from the same material.

The filament of lamp X is thicker and shorter than that of lamp Y.

When connected to the mains and switched on, which is the brighter lamp and which lamp has the larger resistance?

D

B

A

C

8. A resistor has 3 A current flowing through it. How much charge has flown through the resistor in 4 seconds?

6 C

3 C

18 C

12 C

9. What happens when a positively charged rod is brought near a piece of paper?

The rod causes the paper atom to become ionized.

The rod causes a distortion of the charge distribution in the paper's atoms.

The free electrons in the paper move towards the side nearer the rod.

The rod causes a break down of air molecules between the rod and the paper.

10. A piece of wire has a resistance of $16 \, \Omega$.

Another wire made from the same metal has four times the length and twice the cross-sectional area.

What is the resistance of the wire?

$128 \, \Omega$

$8 \, \Omega$

$96 \, \Omega$

$32 \, \Omega$

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