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Hi! Need help please, thank you.
Question:In a model AC generator, a 498 turn rectangular coil 14.0 cm by 21 cm rotates at 124 rev/min in a uniform magnetic field of 0.65 T.
(a) What is the maximum emf induced in the coil?
___ V

(b) What is the instantaneous value of the emf in the coil at t = (ð/30) s? Assume that the emf is zero at t = 0.

(c) What is the smallest value of t for which the emf will have its maximum value?
The correct answer is not zero. s

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