Practice MCQs For Magnetism & Electromagnetism


This quiz contains practice questions for GCE ‘O’ level topic: Magnetism & Electromagnetism. 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. The diagram shows an alarm system.

What happens when battery P is disconnected?
Iron armatureBell
AFallsRings
BFallsStops ringing
CMoves upRings
DMoves upStops ringing
2. The number of turns between each pair of output terminals of a transformer is shown in the diagram.

transformer output voltageBetween which two terminals will the output be 12 V?
3. Electrical energy is transmitted at high alternating voltages.

What is not a valid reason for doing this?
4. Which properties make materials suitable for use as a core in an electromagnet?
5. A small boy turns the handle of a small A.C. generator four times per second. The generator produces a maximum output voltage of 0.5 V.

Which of the following graphs best describe the situation above?

graph of ac generator
6. Why is electrical energy usually transmitted at high voltage?
7. The diagrams show a small compass close to a strong bar magnet.

Which diagram shows the correct compass direction?

8. A loops of wire rotates in a magnetic field. Which of the following actions causes an increase in the e.m.f. generated by the coil?
9. When one end of an iron rod is placed near a compass, ______________.
10. End X of a metal rod attracts the N-pole of a compass needle.

What does this show about the rod?

 

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