Question

Explain the method of preparing electromagnet
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Answer 1

For preparing an electromagnet, first wrap a conducting wire through the magnetic material and connect the ends of the wire with a battery.As soon as the circuit is closed, the current will start flowing and the apparatus will become an electromagnet

If bringing the compass to one of the poles makes its north end point towards it then its the south pole and other one will be the north pole.

Answer 2

Answer:

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Explanation:

When a soft iron core is placed in a solenoid carrying current then it behaves as a electromagnet. It remains as a electromagnet until current flows through it . A solenoid is a coil of many turns.