Question

5 An electromagnet remains magnetised when the electric current in its coils is
switched off.
till make its magnetic

Answer 1

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• An electromagnet is a magnet consisting of a coil of insulated wire wrapped around a piece of iron that is magnetised only when electric current is passed through the coil. ... This is because when current is switched off in the coil of an electromagnet made of iron piece, then the iron piece loses all its magnetism.

Answer 2

$</p><p>ans. \: An \: electromagnet \: is \: a \: magnet \: consisting \: of \: a \\ \: coil \: of \: insulated \: wire \: wrapped \\ \: around \: a \: piece \: of \: iron \: that \: is \: magnetised \\ \: only \: when \: electric \: current \: is \: passed \: through \\ \: the \: coil. \: This \: is \: because \: when \: current \\ \: is \: switched \: off \: in \: the \: coil \: of \\ \: an \: electromagnet \: made \: of \: iron \: piece, \: then \\ \: the \: iron \: piece \: loses \: all \: its \: magnetism.$