Calculate the inducatance of a doughunt solenoid whose inside radius is equal to `b` and cross-section has the form of a square with side `a`. The solenoid winding consists of `N` turns. The space inside the solenoid is filled up with unifrom paramagnetic having permeability `mu`.

Determine the mutual inductance of a doughnut coil and an infinite straight wire passing along its axis. The coil has recatangular cross-section, its inside radius is equal to a and the outside one, to b . The length of the doughtnut's cross-sectinla side parallel to the wire is equal to h . The coil has N turns. The system is located in a unifrom magnetic with permeability mu .

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) ?

A long solenoid is formed by winding 40 turns//cm The current necessary for 40 mT inside the solenoid will be approximately equal to

A long solenoid of N turns has a self-induced L and area of cross-section A. When a current i flows through the solenoid, magnetic field inside it has magnitude B . The current i is equal to

A solenoid of length 0.5 m has a radius of 1 cm and is made up of 500 turns. It carries a current of 5 A. The magnetic field inside the solenoid is

Calculate the time constant tau of a straight solenoid of length l having a single layer winding of copper wire whose total mass is equal to m . The cross-sectional dimater of the solenoid is assumed to be considerably less than its length. Given desity of copper p_(0) and resistivility p .

A solenoid of length 0.6 m has a radius of 2 cm and is made up of 600 turns If it carries a current of 4 A, then the magnitude of the magnetic field inside the solenoid is

Calculate the time constant tau of a straight solenoid of length l = 1.0 m having a single-layer winding of copper wire whose total mass is equal to m = 1.0 kg . The cross-sectional diameter of the solenoid is assumed to be considerably less than its length.

A solenoid consists of 250 turns of wire and has a length of 20 cm. Calculate the magnitude of the magnetic field inside the solenoid if it carries a current of 1A.

A solenoid of length 2m and of radius 1 cm has a winding carrying a current of 0.1 ampere per turn. Find the magnetic field strength inside the solenoid if the total number of turns is 2000.