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Question Details:
Induced EMF
Two circuits contain an emf produced by a moving metal rod, like that shown in the drawing. The speed of the rod is the same in each circuit, but the bulb in circuit 1 has one-half the resistance of the bulb in circuit 2. The circuits are otherwise identical. For both circuits, the magnetic field (denoted by the X's in the drawing) is directed perpendicularly into the screen and has the same magnitude.
(a) Is the motional emf in circuit 1 greater than, the same as, or less than, that in circuit 2?
(b) Is the current in circuit 1 greater than, the same as, or less than, that in circuit 2?
(c) If the speed of the rod in the circuit 1 were doubled, how would the power delivered to the light bulb compare to that in circuit 2?
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