A coil containing 20 turns of average diameter 0.02 m is placed perpendicular to a magnetic field of intensity `1.6 xx 10^4 T`. The magnetic field changes to `1.8 xx 10^3 T `in 4 s. A resistor of resistance 15 ohm is connected in sereis with the coil. If the resistance of the coil is 5 ohm, find the induced current passing through the resistor.

A rectangular coil having 200 turns and size 0.30 xx 0.05 m^2 is placed perpendicular to a magnetic field. The field changes from 5x10^(-3) Wbm^(-2) to 2x10(-3) Wbm(-2) in the time interval of 3 millisecond. Calculate the e.m.f. induced in the coil. If the resistance of the coil is 15Omega , find the value of current flowing through it.

Find the e.m.f. induced in a coil of 100 turns and crosssectional area 0.4 m^2 , when a magnetic field perpendicular to a plane of the coil changes from 0.5 Wbm^(-2) to 0.1Wbm(-2) at a uniform rate over a period of 0.04 s. If the resistance of the coil is 3.2kOmega , find the value of current flowing through it.

The magnetic flux through a coil perpendicular to its plane is varying according to the relation phi = (4 t^3 + 5 t^2 + 8 t + 5) weber Calculate the induced current through the coil at t = 2 s. if the resistance of the coil is 3.1 ohm.

A small coil of radius 0.002 m is placed on the axis of a magnet of magnetic moment 10^(5) JT^(-1) and length 0.1 m at a distance of 0.15 m from the centre of the magnet. The plane of the coil is perpendicular to the axis of the magnet. Find the force on the when a current of 2.0 A is passed through it.

A coil of 500 turns and area 0.04 m^2 is placed in a region of transverse magnetic field of field of 0.25 Wb m^-2 . The coil is roated through 90^@ about its diameter with a particular angular velocity in 0.2 s. The coil is connected to a galvanometer in series having a resistance of 25 ohm. Calculate the total change flow through the galvanometer.

A square shpaed coil of side 10 cm and number of turns 500 is placed perpendicular to magnetif flux lines, which is chaniging at the rate of 1.0T s^-1 . The e.m.f induced in the coil is