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.

The spokes of a wheel are made of metal and their lengths are of one metre. On rotating the wheel about its own axis in a uniform magnetic field of 5xx10^(-5) tesla normal to the plane of the wheel, a potential difference of 3.14 mV is generated between the rim and the axis. The rotational velocity of the wheel is-

A magnetic field of flux density 1.0 Wb m^(-2) acts normal to a 80 turns coil of m^(2) area. Find the e.m.f. induced in it, if this coil is removed from the field in 0.1 second.

A wheel with 10 spokes each of length 'L' m is rotated with a unifrom angular velocity omega in a plane normal to the magnetic field 'B' . The emf induced between the axle and the rim of the wheel.

The length of each side of a square coil of 10 turns is 10 cm. It rotates in a magnetic field of flux density 25 xx 10^(-3)T . If the maximum induced e.m.f. is 20 mV, then the angulare velocity of the coil will be

A wheel with 10 metallic spokes each 0.5 m long is rotated with a speed of 120 rpm, in a plane normal to earths magnetic field at the place. If the magnitude of the field is 0.40 gauss, what is the induced e.m.f. between the axle and rim of the wheel.

A wheel with 20 metallic spokes each 1m long is rotated with a speed of 120 rpm in a plane perpendicular to magnetic field of 0.4G. The induced emf between axle and rim of wheel will be

A cycle wheel 12 metalli spokes each 0.2 m long. It make 60 revolutions in 1 minute in a phane normal to earth's magnetic field of 0.4 xx 10^(-4) T. Calculate the induced e.m.f. between the axle and rim of the wheel.

A wheel with a certain number of spokes is rotated in plane normal to earth's magnetic field so the an e.m.f. is induced between the axle and rim of the wheel. Keeping all other things same, number of spokes is changed. How is the e.m.f. affected ?