In an ac generator, mechanical energy is converted to electrical energy
by virtue of electromagnetic induction If coil of N turn and area A is
rotated at n revolutions per second in a uniform magnetic field B, then
the motional emf produced is
e = NBA (2pn) sin (2pnt)
where we have assumed that at time t = 0 s, the coil is perpendicular to
the field Rationalised 2023-24
Physics
174
POINTS TO PONDER
1 Electricity and magnetism are intimately related