Question

(a) What is an electromagnet? List any two of its uses.(b) What is the purpose of the soft iron core used in making an electromagnet?

Answer 1

Answer:

(a) An electromagnet is a magnet that is created using an electric current, created by electricity.

The two uses are:

1)Motors and generators.

2)Transformers.

3)Relays.

4)Electric bells and buzzers.

5)Loudspeakers and headphones.

(b) The soft iron inside the coil makes the magnetic field stronger because it becomes a magnet itself when the current is flowing. Soft iron is used because it loses its magnetism as soon as the current stops flowing

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Answer 2

Answer:

1 motors and generalist

2 transformers