A pair of parallel conducting rails is separated by 55.0 cm. They are joined at

Question

A pair of parallel conducting rails is separated by 55.0 cm. They are joined at one end by a circuit component containing a light bulb with resistance 144 ?. A transverse rod completes the circuit, sliding down the rails away from the bulb at a speed of 3.25 cm/s. Finally, the whole apparatus is located in a uniform magnetic field perpendicular to the plane of the circuit, and having a strength of 7.44 T. There is an induced emf in the circuit causing the bulb to glow. How much power is being consumed by the bulb?

Explanation / Answer

emf=B*l*v=0.13299 volts power=v^2/r=1.2282*10^(-4) Watts

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