For a solenoid keeping the turn density constant its length makes halved and its cross section radius is doubled then the inductance of the solenoid increased by :-

What will happen to the inductance of a solenoid a. when the number of turns and the length are double keeping the area of cross section same? b. when the air inside the solenoid is replaced by iron of relative permeability mu_(r) ?

What will happen to the inductance of a solenoid a. when the number of turns and the length are double keeping the area of cross section same? b. when the air inside the solenoid is replaced by iron of relative permeability mu_(r) ?

An air core solenoid of 80 cm length has 500 turns and its circular cross-section has a diameter of 2 cm, calculate the self inductance of the solenoid?

A solenoid of radius R has n turns per unit length, then the self-inductance of the solenoid per unit length is

The length and radius of a solenoid of N turns are l and r respectively. The self-inductance of the solenoid is