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 ac source is 50 Hz the impedance and inductance of the solenoid are
Text Solution
Verified by ExpertsThe correct answer is:
B
When dc is applied
When ac is applied
Hence 
Prepare Smarter with CGP Edu
Get practice questions, solutions, and test series in one place.
Write a Review
Share your experience with this question and solution.
Commentary
Send your comment, doubt, correction, or feedback to admin.
Similar Questions
Explore conceptually related problems
The resistance of a coil for dc is in ohms. In ac, the resistance
If instantaneous current is given by amperes, then the r.m.s. value of current is
The peak value of an Alternating current is 6 amp, then r.m.s. value of current will be
The frequency of an alternating voltage is 50 cycles/sec and its amplitude is 120V. Then the r.m.s.…
A resistance of 20 ohms is connected to a source of an alternating potential . The time taken by t…
The maximum value of a.c. voltage in a circuit is 707V. Its rms value is