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Questions  >>  JEEMAIN and NEET  >>  NEET PAST PAPERS  >>  2001
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Q)

For a coil having $L=2$ mh, current flow through it is $I = t^2 e^{-t}$ then the time at which emf become zero :-


( A ) 3 s
( B ) 2 s
( C ) 4 s
( D ) 1 s

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