Assertion : If some ferromagnetic substance is filled inside a solenoid, its coefficient of self induction `L` will increase.
Reason : By increasing the current in a coil, its coefficient of self induction `L` can be increased.

The coefficient of self inductance of a coil is

Define coefficient of self induction. Write its S.I unit.

Assertion: When a ferromagnetic rod is inserted inside an inductor, then current in L-C-R, alternating circuit will decrease. Reason: By inserting the ferromagnetic rod inside the inductor, coefficient of self induction and hence the net impedance will increases.

Assertion: When a ferromagnetic rod is inserted inside an inductor, then current in L-C-R, alternating circuit will decrease. Reason: By inserting the ferromagnetic rod inside the inductor, coefficient of self induction and hence the net impedance will increases.

What is self Inductance of a coil ? Define coefficient of self Induction.

Self inductance of a soleniod can be increased by

Self inductance of a soleniod can be increased by

Derive an expression for the coefficient of self-induction of a long solenoid.