A coil of effective area `4m^2` is placed at right angles to a magnetic field of induction `0.05Wb//m^2`. If the field is decreased to 20% of its original value in10 seconds, find the e.m.f. induced in the coil.

A coil of effective area 2m^2 is placed at right angles to a magnetic field of induction 0.08 Wb//m^2 . Find the e.m.f. induced in it if the field reduces to ten percent of its original value in 0.6s

A coil of effective area 10m^2 is placed at right angles to a magnetic field of induction 0.05 T. Find the induced emf in the coil if just the magnitude of the field is changed to 0.03T in 0.2s.

A coil having 50 turns and an area of 800cm^2 is held with its plane perpendicular to uniform magnetic field of induction 5 xx 10^-5 Wb/m^2 .If it is pulled out of the field in 2 second ,then the e.m.f.induced in the coil will be

The magnetic flux through a coil is 5 xx10^-4 Wb at time t = 0. It reduces to ten percent of its original value in 0.5s. The magnitude of e.m.f. induced in the coil is

A magnetic flux associated with a coil changes by 5xx10^-2 Wb in 25 second. Find the emf induced in the coil.

The conductor moving with uniform velocity of 10 m//s at right angles to the magnetic field of induction 0.4 xx 10^-4 Wb//m^2 . Calculate length of the conductor if the e.m.f. induced at the ends of conductor is 6 xx 10^-5V .

A conducting loop of area 1m^2 is placed normal to uniform magnetic field 3Wb//m^2 . If the magnetic field is uniformly reduced to 1 Wb// m^2 in a time of 0.5 s, calculate the induced emf produced in the loop.

A rod of length l is rotated about its one end, perpendicular to a magnetic field of induction B What is the e.m.f induced in the rod

A rectangular coil of 10 turns and effective area 0.05 m^2 is freely suspended in a radial field of induction 0.01Wb/m^2 . If the torsional constant of suspension fibre is 5 xx 10^-9 Nm/degree , find the angle through which the coil rotates when a current Of 30 mu A is passed through it