Questions
A circular coil of mean radius of 7 cm and having 4000 turns is rotated at the rate of 1800 revolutions per minute in the earth's magnetic field (B = 0.5 gauss). The maximum e.m.f. induced in coil will be
detailed solution
Correct option is B
e0=ωNBA=(2πv)NBπr2=2×π2∨NBr2=2×(3.14)2×180060×4000×0.5×10-4×7×10-22= 0.58 VTalk to our academic expert!
Similar Questions
A copper disc of radius 0.1 m is rotated about its centre with 10 revolutions per second in a uniform magnetic field of 0.1 Tesla with its plane perpendicular to the field. The e.m.f. induced across the radius of disc is
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