Question: The side view below shows an iron magnet with two exposed pole faces moving slowly to the right at speed . A stationary conducting wire

The side view below shows an iron magnet with two exposed pole faces moving slowly to the right at speed ν. A stationary conducting wire bent into a U-shape (P'Q'QP) is placed at an angle in the gap between the pole faces such that the wire makes electrical contact with the moving magnet at P and P'. Calculate the EMF induced in the wire, both before and after the top edge of the loop Q'Q enters the field B of the magnet. Make a reasonable assumption about the drift velocity of the electrons in the wire and in the moving magnet.

B S N P E V V PE P' Q'

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There is both a flux and a motional contribution to the EMF so we use f ds dS B dt ds va x B and pic... View full answer

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