How is an electromagnet made? Name two factors on which the strength of magnetic field of the electromagnet depends.

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Solution

An electromagnet is made by winding an insulated copper wire around a soft iron core either in the shape of a solenoid or U-shape and passing current through it.

The strength of magnetic field of an electromagnet depends on:

The number of turns of wire wound around the coil, and

The amount of current flowing through the wire.

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