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. A metal bar PQ hangs from a thin thread and always comes to rest with end P pointing north. Another bar XY of the same metal settles in no definite direction.

What happens if the two bars are brought near one another?
2. Which of the following actions CANNOT increase the magnetic field strength of an electromagnet with only air within its core?
3. Why is a transformer used to connect a generator in a power station to a long distance transmission line?
4. When a bar magnet is being suspended freely,
5. The diagram shows an alarm system.

Magnet Qn 16What happens when battery P is disconnected?
Iron armatureBell
AFallsRings
BFallsStops ringing
CMoves upRings
DMoves upStops ringing
6. The diagram shows the shape of the magnetic field lines near a current-carrying conductor.

Magnet Qn 12The current in the conductor is into the plane of the diagram.

Which row correctly states the direction of the field lines and compares the strengths of the field at points P and Q?
Direction of field linesThe field is stronger at
AClockwiseP
BClockwiseQ
CAnticlockwiseP
DAnticlockwiseQ
7. The magnetic field around two bar magnets is shown.

Magnet Qn 10Which diagram represents the correct arrangement of magnetic poles?

Magnet Qn 11
8. A wire hangs between the poles of a magnet.

When there is a current in the wire, in which direction does the wire move?

lorentz force on wire
9. A bar magnet is broken into three parts X, Y and Z.

Magnet Qn 27Which diagram shows the poles in X, Y and Z?

Magnet Qn 28
10. When the north pole of a magnet is placed near the south pole of another magnet, ________________.

 

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