The term "electromagnet" refers to a device that uses

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a temporary magnet

a permanent magnet

not a strong magnet

Magnets that are neither transient nor permanent

answer is A.

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Detailed Solution

Current Magnetic Effect

A magnetic field is created by a current-carrying conductor.

The magnetic force is proportional to the current and the distance from the conductor.

An electromagnet is made using this feature of current.

An electromagnet is a transient magnet with the feature of acting as a magnet while current runs through it and losing magnetism when the current is turned off.

Because soft iron has a high magnetic permeability, it may rapidly obtain magnetic characteristics when current is conducted through the core and swiftly lose them when the current is stopped.

Because the soft iron inside the coil becomes a magnet when the current flows, it strengthens the magnetic field.

When the switch is turned on, an electromagnet functions like a magnet, but when the switch is turned off, it loses its magnetism.

Electromagnet becomes a transient magnet as a result of this.

As a result, a temporary magnet is the best alternative.

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