Foundation
Physics Foundation
Magnetism
Question

The diagram shows a bar magnet surrounded by four plotting compasses.
Which is the North Pole?

X
A
Y
B
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Solution
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When a magnetic compass is kept in the magnetic field the direction compass needle shows the direction of the magnetic field.

In the above image, Compass near the X – end shows the outward direction of magnetic field and the Compass near the Y – end shows inward direction of magnetic field. Hence X end will show the North pole of the magnet and Y end will show the North pole of the magnetic field.