Question: A conducting rod of length moves with velocity v parallel to a long wire carrying a steady current I. The axis of the rod is

A conducting rod of length ℓ moves with velocity v parallel to a long wire carrying a steady current I. The axis of the rod is maintained perpendicular to the wire with the near end a distance r away, as shown in Figure P31.63. Show that the magnitude of the emf induced in the rod is

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