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The current i in an inductionn coil vari...

The current i in an inductionn coil varies with time `t` according to the graph shown in the figure. Which of the following grahs shows athe induced emf `(epsilon)` in the coil with time?

A

B

C

D

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The correct Answer is:
C
In Fig. when `i` is constant,` phi` constant
Therefore, `e = 0`
When `i` decrease, `phi` decreases, e.m.f. induced is positive constant. When `i` increases, `phi` increases, e.m.f. induced is negative constant. Choice (c ) is correct.
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