Electromagnetic...

A coil having area 2m² is placed in a magnetic field which changes from 1 wb/m² to 4 wb/m² in an interval of 2 second. The emf induced in the coil of single turn is....

Two different loops are concentric & lie in the same plane. The current in outer loop is clockwise & increasing with time. The induced current in the inner loop then, is..........

A magnetic field 2 × 10^–2 T acts at right angles to a coil of area 200 cm² with 25 turns. The average emf induced in the coil is 0.1 v when it removes from the field in time t. The value of t is

The magnetic flux linked with a coil, in webers, is given by the equation ϕ = 4t² – 3t + 7. Then the magnitude of induced emf at 2 sec will be ...

When a train travels with a speed 360 km h^–1 along the track separated by 1 meter. The vertical component of earth's magnetic field is 0.1 × 10^–4 T. What is the value of induced emf between the rails ?

An electron moves along the line AB,which lies in the same plane as a circular loop of conducting wires as shown in figure. What will be the direction of current induced if any, in the loop ?

A circular loop of radius R carrying current I lies in X – Y plane with its center at origin. The total magnetic flux through x – y plane is.....

Two similar circular loops carry equal currents in the same direction. On moving the coils further apart, the electric current will

When the number of turns in a coil is make four time without any change in length of the coil, its self inductance becomes......

A metal road moves at a constant velocity in a direction perpendicular to its length & a constant uniform magnetic field too. Select the correct statement (s) from the following.