An electric charge of 12 C passes through the cross section of a wire in one minute. Find the current through the wire.

Solve the following examples (numerical problems): An electric charge of 15 C passes through the cross section of a wire in one minute. Find the current through the wire.

A charge of 30 C passes through a conductor for 2 minutes. Find the current flowing through the conductor.

The self inductance of a closely wound coil of 200 turns is 10 mH . Determine the value of magnetic flux through the cross -section of the coil when the current passing through the coil is 4 mA.

The length and cross-section of the wire of meter bridge are

Answer the following questions : What is the effect on the magnetic needle in Oersted's experiment, when (1) a current is passed through the wire (2) the current through the wire is increased (3) the current through the wire is stopped (4) the current through the wire is reversed (5) the distance between the magnetic needle and the wire is increased, keeping the current through the wire constant ?

A current of 0.2 A passes through a metal wire for 20 seconds. Calculate the number of electrons passing through the cross section of the wire during this time. (The charge on an electron = 1.6 times 10^(-19) C)

Solve the following examples (numerical problems): A current of 0.1 A passes through a copper wire for 40 seconds. Find the charge flowing through the cross section of the wire during this time and the number of electrons carrying it. (The charge on an electron, q= -1.6 times 10^(-19) C)

A current of 800 mA is passed through an electric lamp for one minute. Find the number of electrons passing through it if the charge of electron is 1.6 xx 10^-19 C.

If a charge of 420 C flows through a conducting wire. In 5 minutes what is the value of the current ?