Question

When 100 volts d.c. is applied across a solenoid a current of 1.0 amp. flows in it. When 100 volt a.c. is applied across the same coil, the current drops to 0.5 amp. If the frequency of the a.c. source is 50 Hz the impedance and inductance of the solenoid are :-

(1)200 ohm and 0.55 H(2)100 ohm and 0.86 H(3)200 ohm and 1.0 H(4)100 ohm and 0.93 H

Answer 1

Explanation:

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