Q - A circular coil of N turns and radius 'r' is kept normal in a mgnetic field given by B = B0 cosωt . Deduce an expression for induced emf in the coil ?
Please help me sir. !!!
Area of the coil, A = πr2
Magnetic field of the coil, B = Bocosωt
=> Magnetic flux linked with the coil, Φ = NB.A
=> Φ = NBA cos0
=> Φ = NBA
Induced emf, e = - dΦ/dt = ωNABosinωt