Which one of the following is the correct variation of voltage with time in the coil?
A)
B)
C)
D)
Correct Answer: D
Solution :
[d] \[V=-L\frac{di}{dt}\] Here \[\frac{di}{dt}\]is \[+ve\] for \[\frac{T}{2}\]time and \[\frac{di}{dt}\]is \[-ve\] for next \[\frac{T}{2}\]time
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