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Two circuits contain an emf produced by a moving metal rod, likethat shown in the drawing. The speed of the rod is the same in eachcircuit, but the bulb in circuit 1 has one-half the resistance of the bulb in circuit 2. The circuits are otherwise identical. Theresistance of the light bulb in circuit 1 is 50Ω, and that in circuit 2 is 100 Ω.Determine (a) the ratioε1/ε2 of the emfsand (b) the ratioI1/I2 of the currents inthe circuits. (c) If the speed of the rod incircuit 1 were twice that in circuit 2, what would be the ratioP1/P2 of the powers in thecircuits?

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