Q18 of 44 Page 428

Write true or false for the following statements:

Like magnetic poles attract each other; unlike poles repel.

False.

Unlike magnetic poles attract each(North and South attract) other and like magnetic poles repel each(North repel North and South repel South) other.


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Write true or false for the following statements:

One should always use rubber gloves and rubber shoes when dealing with electricity.

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Earthing of electrical appliances is very important.

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Write true or false for the following statements:

If you strike a sharp edge of a metallic knife against the north pole of a bar magnet, it will induce a north pole.

 20

Write true or false for the following statements:

The magnetic field produced by a current in a straight wire has no poles.