Q21 of 44 Page 428

Write true or false for the following statements:

An electric generator is a device that converts electrical energy into mechanical energy.

False.

An electric generator is a device used to convert mechanical energy, which is used to rotate the coil between magnets, into electrical energy which is obtained by the phenomena called electromagnetic induction.


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17

Write true or false for the following statements:

Earthing of electrical appliances is very important.

 18

Write true or false for the following statements:

Like magnetic poles attract each other; unlike poles repel.

 19

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.