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When 100volts DC is applied across a coi...

When `100`volts `DC` is applied across a coil, a current of `1amp` flows through it. When `100` volt `AC` at `50` cycles `s^(-1)` is applied to the same coil, only `0.5` ampere current follows.

A

`100 Omega`

B

`200 Omega`

C

`300 Omega`

D

`400 Omega`

Text Solution

Verified by Experts

The correct Answer is:
B
When DC is supplied `R=V/i=100/1=100Omega`
When AC is supplied `Z=V/i=100/0.5=200Omega`
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