A certain wire has length 4.5 cm and mass 12.3 g, with an
electrical resistance of 1.1 mΩ. this wire falls through a horizontal
magnetic field with flux density of 0.35 T. As his wire falls its ends
slide smoothly between two rails connected by a wire with negligible
internal resistance. Calculate the magnitude of the terminal energy
resistance, neglecting the resistance of the rails.
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