An alternating current `I` in an inductance coil varies with time `t` according to the graph as shown: Which one of the following graph gives the variation of voltage with time?

Options

A.
B.
C.
D.

Answer

B

Explanation

`(1)` for time interval `0lttltT//2`
`I=kt`, where `k` is the slope
For inductor as we know, induced voltage `V=-L(di)/(dt)`
`implies V_(1)=-KL`
(2) For time interval `T/2 lt tlt T`
`I=-Kt implies V_(2)=KL`