Q19 of 32 Page 36

Find the current in the wire for the configuration shown in Fig 6.8. Wire PQ has negligible resistance. B, the magnetic field is coming out of the paper. is a fixed angle made by PQ travelling smoothly over two conducting parallel wires separated by a distance d.


It is given PQ is a wire of negligible resistance which travel smoothly over two conduction parallel wire X and Y separated by distance d and θ is the fixed angle made by PQ and B is the strength of the magnetic field perpendicular to the plane of the paper and outward

hence motion electric field = vB


the direction of this electric field is along CD perpendicular to


EMF of the induced in wire PQ


e = length of PQ * motional electric field QP




current in the wire


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