When a wheel with metal spokes 1.2 m long rotates in a magnetic field of flux density `5 xx 10^(-5) T` normal to the plane of the wheel, an e.m.f. of `10^(-2) V` is induced between the rim and the axle. Find the rate of rotation of the wheel.

A magnetic field of flux density 10 T acts normal to a coil of 50 turns having 100cm^2 area. Find e.m.f. iduced, if the coil is removed from the magnetic field on 0.1 s.

A magnetic field of flux density 1.0 Wbm^-2 acts normal to a 80 turns coil of 0.01 m^2 area. Find the e.m.f. induced in it. If this coil is removed form the field in 0.1 second

A conductor 2m long moves in a magnetic field of lfux density 0.5 xx 10^-4 tesla with a speedof 36 km per hour. Calculate the e.m.f. induced in it, if it is perpendicular to both its length and field.

A wheel with 10 metallic spokes each 0.5 m long, is rotated with a speed of 120 rpm. Please of the wheel is normal to earth's magnetic field at that place. If the magnitude of the field is 0.40 G, what is the induced emf between the axle and rim of the wheel?

A wheel with 8 matallic spokes each 50 cm long is rotated with a speed of 120 rev//mi n in a plane normal to horizontal component of earth's magnetic field. Earth's magnetic field at the phase is 0.4 G and angle of dip 60^(@) . Calculate the emf induced between the axle and rim of the wheel. How is the emf affected if number of spokes is increased ?

If a 10 m long metallic bar moves in a direction at right angle to the magnetic field with a speed of 5.0 m s^-1 25 V e.m.f. is induced in it. Find the value of magnetic field intensity.

A piece of wire is passed thorugh the gap between the poles of a magnet in 0.1 s. An e.m.f. of 4xx10^-3V is induced in the iwre. The magnetic flux between the poles of the magnet is