A wheel with 15 metallic spokes each 60 cm long is roated at 360 rpm in a plane normal to
Channel: Doubtnut
Date: 2020-08-02

A wheel with 15 metallic spokes each 60 cm long is roated at 360 rpm in a plane normal to the horizontal component of earth's magnetic field. The angle of dip at that place `60^(@)`. If the e.m.f. induced between the rim of the wheel and the axle is 400 m mV, calculate horizontal component of earth's magnetic field at the place. How will the induced e.m.f. change. if number of spokes is increased ?