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A system S consists of two coils A and B...

A system S consists of two coils A and B. The coil, A carries a steady current I. While the coil B is suspended nearby as shown in figure. Now, if the system is heated, so as to raise the temperature of two coils steadily, then

A

the two coils shows attraction

B

the two coils shows repulsion

C

there is no change in the position of the two coils

D

induced current are not possible in coil B

Text Solution

Verified by Experts

The correct Answer is:
A
Coil A carries a steady current with increase in temperature, its resistance increases and so current is decreasing at a constant rate, this induces an emf in B which oppose this change i.e., current in coil B is in same direction of A, therefore they attract to each other.
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