If the north pole of a bar magnet is brought closer to a spherical iron ball then where will its induced north pole be?

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There will be no induced magnetic poles as the shape is spherical.

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Solution

The correct option is A
1

EMF will be induced in the spherical iron ball when the magnet is brought closer to it. Imagine the sphere to be made of many small bar magnets. They will align themselves with their south poles facing the point 2 and hence at position 1, we will get the North Pole.

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Question 4

North pole of a magnet can be identified by

(a) Another magnet having its poles marked as North pole and South pole.

(b) Another magnet no matter whether the poles are marked or not.

(d) Using iron filings.

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