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In a model AC generator, a 505 turn rectangular coil 7.0 cm by 20 cm rotates at 124 rev/min in a uniform magnetic field of 0.56 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 = (?/34) s? Assume that the emf is zero at t = 0.
=________ V
(c) What is the smallest value of t for which the emf will have its maximum value?
=_________ s
The potential difference between the ends of a resistor is 9 V and the rate of energy dissipation in it is 18 W. What is the value of that resistor
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