Question

The resistance of a coil for d.c. is 5 Ω. In a.c., the resistance will ______.

Options

• remain same

• increase

• decrease

• be zero

Answer 1

The resistance of a coil for d.c. is 5 Ω. In a.c., the resistance will increase.

Explanation:

For an inducting coil, in a.c., there is inductive reactance in addition to the resistance. Hence, the net resistance of the coil will increase.