# 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.

The quiz comprises of 10 questions, which are randomly selected from a large pool of questions. After completion, you can refresh the page and try the quiz again for a new set of 10 questions.

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1. Which of the following statements correctly interpret the meaning of 3 A?
2. Which of the following devices' main purpose is NOT to provide safety to users of electricity?
3. The case of an electric fan is earthed. The plug to the fan contains a 5 A fuse. There is a current of 4 A when the fan works normally.

The cable to the fan becomes so worn that the live wire makes electrical contact with the metal case.

What happens?
4. A resistor has 3 A current flowing through it. How much charge has flown through the resistor in 4 seconds?
5. A cell is connected to a resistor.

What is the e.m.f. of the cell equal to?
6. A wire of length l and cross-sectional area A has a resistance R. The same amount of material is used to make a wire twice as long.

What is the resistance of the new wire?
7. Diagram 1 shows a resistor with resistance R connected to a battery, an ammeter and a voltmeter.

The ammeter reading is $A_{1}$ and the voltmeter reading is $V_{1}$.

A 3 identical resistors are now connected with the first resistor, as shown in diagram 2.

What are the ammeter (A) and voltmeter (V) readings in the circuit shown in diagram 2?

(Hint: Current only flows when there is a potential difference.)
8. Which factors will both increase the resistance of a wire in a circuit?
Size of wireTemperature of wire
ALongerLower
BShorterLower
CThickerHigher
DThinnerHigher
9. An electrical quantity is defined as 'the energy converted by a source in driving a unit charge round a complete circuit.'

What is this quantity called?
10. The diagram shows a voltmeter adapted to measure a range from 0 - 100 mV. The voltmeter is measuring the potential difference in a circuit.

What is the reading on the voltmeter?

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