Electromagnetic...

Lenz\'s law applies to

A moving conductor coil in a magnetic field produces an induced e.m.f. This is in accordance with

In the diagram shown if a bar magnet is moved along the common axis of two single turn coils A and B in the direction of arrow

A square coil of side 25 cm having 1000 turns is rotated with a uniform speed in a magnetic field about an axis perpendicular to the direction of the field. At an instant t the e.m.f. induced in the coil is e = 200 sin 100 π t. The magnetic induction is

The formula for induced e.m.f. in a coil due to change in magnetic flux through the coil is (There A = area of the coil, B = magnetic field)

Lenz\'s law is expressed by the following formula (here e = induced e.m.f., ɸ = magnetic flux in one turn and N = number of turns)

A magnet is dropped down an infinitely long vertical copper tube

An aluminum ring B faces an electromagnet A. The current I through A can be altered

A small piece of metal wire is dragged across the gap between the pole pieces of a magnet in 0.5 second. The magnetic flux between the pole pieces is known to be 8 × 10^–4 Wb. The e.m.f. induced in the wire is