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Q.

Is it true that a bar magnet has three poles?


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a

False 

b

True.

answer is B.

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Detailed Solution

The above statement is False.
“A magnet has two poles: north and south. These two poles cannot be separated under any circumstances”. Therefore, both parts contain the north and south poles even if you split the magnet.
An electric current produces magnetism. Because magnetic field lines are continuous and form closed loops, a magnet will always have two poles, one north and one south.
The corrected statement would be that a bar magnet has only two poles.
 
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