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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