A magnetic field of 2 xx 10^(-2)T acts a...

A magnetic field of `2 xx 10^(-2)`T acts at right angles to a coil of area `100cm^(2)` with 50 turns. If the average emf induced in the coil is 0.1V when it is removed from the field in time t. The value of .t. is

0.1s

0.01s

20s

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