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When 100 V DC is applied across a soleno...

When 100 V DC is applied across a solenoid, a steady current of 1 A flows in it. when 100V AC is applied across the same solenoid, the current drops to 0.5 A. If the frequency of the Ad source is `150// sqrt3pi Hz`, the impedance and inductance of the solenoid are

A

`200 Omega` and `1//3 H`

B

`100 Omega` and `1//16 H`

C

`200 Omega` and `1.0 H`

D

`1100 Omega` and `3//11 H`

Text Solution

Verified by Experts

The correct Answer is:
A
`R=100/1=100 Omega , x=sqrt(Z^(2)-R^(2))`
`Z=100/0.5=200 Omega , L=x/omega=1/3H`.
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