Question

List four properties of electromagnets.

Answer 1

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Four properties of electromagnetic:-

1.They are temprory maganet.

2. Their strength can be decreased or increased by altering current.

3.Their polarity can be change.

4. Their magnetic field strength can be change.

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Answer 2

1.The Strength of the electromagnets can be increased by increasing the current in the coil.

2. The Strength of the electromagnet can be increased by introducing a soft iron core inside the coil.

3.They are very strong temporary magnets.

4.As soon as the current is switched off the electromagnet become demagnetised.