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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

Text Solution

Verified by Experts

The correct Answer is:
C
`e=L|(di)/(dt)|=L` (Slope of `i - t`graph)
Initilly slope `=0implies e=0`
Then in remaining two regions slopes are constant but of opposite signs. Hence, induced emfs are constants but of opposite signs.
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