Electromagnetic Induction

A magnetic field of \(2 \times 10^{-2} \mathrm{~T}\) acts at right angles to a coil of area \(100 \mathrm{~cm}^2\) with 50 turns. The average e.m.f. induced in the coil is \(0.1 \mathrm{~V}\), when it is removed from the field in time '\(t\)'. The value of '\(t\)' is