A wheel with ten metallic spokes each `0.50 m` long is rotated with a speed of `120 rev//min`
Channel: Doubtnut
Date: 2020-08-02

A wheel with ten metallic spokes each `0.50 m` long is rotated with a speed of `120 rev//min` in a plane normal to the earth's magnetic field at the place. If the magnitude of the field is `0.4` gauss, the induced e.m.f. between the axle and the rim of the wheel is equal to