If bar magnet is being moved towards a stationary coil $\left(\mathrm{i}\right) \text{rapidly }\left(\mathrm{ii}\right)$ slowly, e.m.f induced in the coil is

A conducting square loop of side $l$ and resistance $R$ moves in its plane with a uniform velocity $v$ perpendicular to one of its sides. A magnetic induction $B$ in time and space, pointing perpendicular and into the plane of the loop exists everywhere. The current induced in the loop is