The self inductance of a choke coil is 10 mH. When it is connected with a 10 V DC source, then the loss of power is 20 W. When its is connected with 10 V AC source loss of power is 10 W. The frequency of AC source will be
Text Solution
Verified by ExpertsThe correct answer is:
A
With DC power, 
With AC power, 
The impedance, 
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