A circular coil of radius $10\,\text{cm}$, $500$ turns and resistance $2\,\Omega$ is placed with its plane perpendicular to the horizontal component of the earth's magnetic field. It is rotated about its vertical diameter through $180^\circ$ in $0.25\,\text{s}$. The induced current in the coil is (Horizontal component of the earth's magnetic field at that place is $3.0 \times 10^{-5}\,\text{T}$)