What is the instantaneous value of the emf in the coil

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Q. In a model AC generator, a 500-turn rectangular coil 8.0 cm by 20 cm rotates at 120 rev/min in a uniform magnetic field of 0.60 T. a) what is the maximum emf induced in the coil? b) what is the instantaneous value of the emf in the coil at t=(pie/32)s? Assume that the emf is zero at t=0.

a) 60 V (I know how to do this)
b.) 57 V -- this one I cannot get

Reference no: EM1353030

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