engineering recuitment AAI ATC Junior Executive 2025 Mock Test Series Physics Electromagnetic Induction and Inductance Motional Electromotive Force
A metal wheel with 20 metallic spokes each 1m long, is rotated with a speed of 180 rpm, in a plane perpendicular to the earth's field. at that place. If the magnitude of the field is 0.40 gauss, then the emf between the axle and rim of the wheel is
1
3.77× 105 V
2
3.77× 10-5V
3
3.77× 104 V
4
3.77× 10-4 V