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A conducting bar of length script l moves to the right on two frictionless rails, as shown in the figure below. A uniform magnetic field directed into the page has a magnitude of 3.10 T. Assume script l = 32 cm and R = 8.7 O.

(a) At what constant speed should the bar move to produce an 8.2 mA current in the resistor?

m/s

(b) At what rate is energy delivered to the resistor?

mJ/s

(c) Explain the origin of the energy being delivered to the resistor.

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  • Category:- Physics
  • Reference No.:- M91038776

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