A long straight solenoid of cross-sectional diameter d and with n turns per unit of its length has a round turn of copper wire of cross-sectional area A and density `rho` is tightly put on its winding. Find the current flowing in the turn if the current in the solenoid winding is increased with a constant rate I ampere per second.

A long straight solenoid of cross-sectional diameter d = 5 cm and with n = 20 turns per one cm of its length has a round turn of copper wire of cross-sectional area S = 1.0 mm^(2) tightly put on its winding. Find the current flowing in the turn if the current in the solenoid winding is increased with a constant velocity dotI = 100 A//s . The inductance of the turn is to be neglected.

A very long straight solenoid has a cross section radius R . A number of turns per unit length is equal to n . Find the magnetic induction at the centre of the coil when a current I flows thougth it.

The magnetic field intensity inside a long solenoid is 1T. If the current per turn of the solenoid winding is 1A, find the number of turns in per meter.

In a long staright solenoid with cross-sectional radius a and number of turns per unit length n a current varies with a constant velocity dotI A//s . Find the magntidue of the eddy current field strength as a function of the distance r from the solenoid axis. Draw the appoximate plot of this function.

A long solcnoid of length 1m, cross-sectional area 10cm^(2) , having 1000 turns has wound about its centre a small coil of 20 turns. Compute the mutual inductance of the pair of solenoid and the coil . What is the induced EMF in the coil when the current in the solenoid changes at the rate of 10 A//s ?

The self inductance of a solenoid of length L, area of cross-section A and having N turns is-

A very long straight solenoid carries a current i . The cross-sectional area of the solenoid is equal to S , the number of turns per unit length is equal to n . Find the flux of the vector B through the end plane of the solenoid.

A current I flows in a long single layer solenoid with cross-sectional radius R . The number of turns per unit length of the solenoid equals n . Find the limiting current at which the winding may ruputure if the tensile strength of the wire is equal to F_(l i m) .