Q.

When an electric current flows through a wire, it


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a

Cools down

b

Behaves like a magnet

c

It boils

d

Melts easily 

answer is B.

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Detailed Solution

When an electric current flows through a wire, it behaves like a magnet.
According to the concept of the magnetic effect of electric currents, whenever the current flows through any conductor, it behaves as a magnet. A current wire acts like a magnet and deflects the compass's needle. When an electric current passes through an electric conductor or wire, the conductor/wire gets heated up; this is called the heating effect of electric current.
 
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