Question

disadvantage of Electromagnet over permanent magnets​

Answer 1

Answer:

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Disadvantages of Electromagnets

The short-circuit may damage the electromagnet. Electromagnets require a continuous supply of current. This may, at some point in time, affect the magnets and its field due to various factors like ohmic heating, Inductive voltage spikes, core losses, the coupling of coils, etc.

Explanation:

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Answer 2

Explanation:

Disadvantages of Electromagnets

The short-circuit may damage theelectromagnet.Electromagnets require a continuous supply of current. This may, at some point in time, affect the magnets and its field due to various factors like ohmic heating, Inductive voltage spikes, core losses, the coupling of coils, etc.