Question

Question:-
_________××_________
When 100 volt DC is applied across a solenoid, a current of 1.0 amp flows in it. When 100 volt AC is applied across the same coil, the current drops to 0.5 amp. If the frequency of the AC source is 50 Hz.

What is the impedance and inductance of the solenoid?
_________××__________​

Answer 1

Answer:

200Ω and 0.55 H

impedance= IacVac=0.5A100V=200Ω

R=IdcVdc=1100=100Ω

Lω = impedance2−R2=2002−1002=173.2

L=ω173.2=2π50173.2=0.55H