Biology

9 April, 13:50

Why is an electromagnet a temporary magnet?

a. An electromagnet cannot be turned on and off.

b. An electromagnet is a magnet when no current flows through the wire. The electromagnet no longer acts as a magnet when current flows through the wire.

c. An electromagnet is only a magnet if a current flows through the wire continuously.

d. An electromagnet becomes a magnet when a current flows through the wire. An electromagnet no longer acts as a magnet when the current flow stops.

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