Question

13.A wheel having metal spokes of Im long
between its axle and rim is rotating in a
magnetic field of flux density 5 × 10 -ST
normal to the plane of the wheel. An e.m.f
of 22/7 mV is produced between the rim
and the axle of the wheel. The rate of
rotation of the wheel in revolutions per
seconds is​

Answer 1

A wheel having metal spokes of 1 m long between its axis and rim is rotating in a magnetic field of flux density 5×10

−5

T normal to the plane of the wheel. An emf of (7/22 ) mV is produced between the rim and the axle of the wheel. The rate of rotation of the wheel in radian per second is

= 10 rotation/sec