A coil of 5 turns is threaded by a changing magnetic flux changing at the rate `5 xx 10^-3` weber per second. Find the average emf induced.

A coil of 200 turns is linked with a magnetic flux that changes from 10^-5 weber to 10^-4 weber is a millisecond. Find the emf induced across the coil.

The northpole of a bar magnet is thrust into a coil of 100 turns so that the flux linkage increases from 1 microweber to 5 microweber in 1 millisecond. Calculate the average emf induced across the end of the coil.

A coil of 100 turns carries a current of 5mA and creates a magnetic flux of 10^-5 weber. The self inductanceof the coil inmilihenry is