Question: Consider the arrangement shown in Figure P31.20. Assume that R = 6.00 Ω, = 1.20 m, and a uniform 2.50-T magnetic field is directed into

Consider the arrangement shown in Figure P31.20. Assume that R = 6.00 Ω, ℓ = 1.20 m, and a uniform 2.50-T magnetic field is directed into the page. At what speed should the bar be moved to produce a current of 0.500 A in the resistor?

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