The self inductance of a long solenoid cannot be increased by

Question

The self inductance of a long solenoid cannot be increased by (A) increasing its area of cross section (B) increasing its length (C) changing the medium with greater permeability (D) increasing the number of turns in it

Tardigrade Admin · Accepted Answer

The self inductance of a long solenoid L=(μ N2 A/l) i.e., the self inductance of a long solenoid cannot be increased by increasing the current through it.

Q. The self inductance of a long solenoid cannot be increased by

increasing its area of cross section

increasing its length

changing the medium with greater permeability

increasing the number of turns in it

increasing the current through it

The self inductance of a long solenoid
$L = \frac{μ N ^{2} A}{l}$
i.e., the self inductance of a long solenoid cannot be increased by increasing the current through it.