Alternating Current Ques 25
25. The current $(I)$ in the inductance is varying with time according to the plot shown in figure.
Which one of the following is the correct variation of voltage with time in the coil?
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Answer:
Correct Answer: 25.(d)
Solution:
- (d) $V=-L \frac{d i}{d t}$
Here $\frac{d i}{d t}$ is $+ ve$ for $\frac{T}{2}$ time and
$\frac{d i}{d t}$ is $- ve$ for next $\frac{T}{2}$ time so
BETA
