When the current change from `+2A` to `2A` in `0.05` second, an e.m.f. of `8V` is induced in a coil. The coefficient of self-induction of the coil is

When the current changes from +2A to -2A in 0.05 second, an e.m.f. of 8V is induced in a coil. The coefficient of self-induction of the coil is

When the current changes from +2 A to –2A in 0.05 second, an e.m.f. of 8 V is induced in a coil. The coefficient of self - induction of the coil is

When the current changes from +2A to -2A in 0.5 second an emf of 8V is induced in a coil. The coefficient of selfinduction of the coil is

When the current changes fro +2A to -2A in 0.05 s, an e.m.f. of 8 V is induced in the coil. The coefficient of self-indution of the coil is

When the current in a coil changes from 2 A to 4 A in 0.05 s, an e.m.f. of 8 V is induced in the coil. The coefficient of self-induction of the coil is

When the current changes from +2A to -2A in 0.05s , and emf of 8V is induced in a coil. The coefficient of self-induction of the coil is

When the current changes from +2A to -2A in 0.05s , and emf of 8B is induced in a coil. The coefficient of self-induction of the coil is

When the current changes from + 2A to -2A in 0.05 s, an emf of 8 V is induced in a coil is co-efficient of self-induction of the coil is