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When an electric current flows through a copper wire AB as shown in figure, the wire
$(a)$. deflects a magnetic needle placed near it
$(b)$. becomes red hot
$(c)$. gives electric shock
$(d)$. behaves like a fuse"
When an electric current is passed through a wire, the wire behaves like a magnet as a magnetic field is produced around the wire due to the magnetic effect of the current. So, the wire will deflect a magnetic needle placed near it.
So, option $(a)$ is correct.
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