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