500 AP Physics Questions to Know by Test Day
Author:Craig Freudenrich & Albert de Richemond
Language: eng
Format: epub
Publisher: McGraw-Hill Education
Published: 2012-12-27T16:00:00+00:00
419. A conducting rod (L = 2.0 m) is moved along two conducting rails within a magnetic field (B). The rails are hooked up to a light bulb. The resistances of the rails and rod are negligible, but the light bulb has a resistance of 100Ω. The rod is moved at a velocity (v) of 5 m/s in the direction indicated. It induces a current (I) in the circuit as indicated in the figure. The magnetic field has a magnitude of 2.0 T and the direction is indicated in the figure.
(A) What is the magnitude of the induced EMF (ε)?
(B) What is the current flowing through the circuit?
(C) How much power is dissipated by the light bulb?
(D) How much energy is used by the light bulb in 60 s?
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