Question

explain the method of preparing electromagnet how do you test the poles of an electromagnet with the help of magnetic compass
pls help me​

Answer 1

Answer:

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.