Answer:
In Fig. 4(EP).9, PQ is a
wire of negligible resistance travelling smoothly over two conducting parallel wires
X and Y separated by distance (d). is
fixed angle made by PQ and B is strength of magnetic field perpendicular to the
plane of paper and outwards. Motional electric field =
Its direction is along 0 K, perpendicular to and .
e.m.f. induced in wire PQ
current
in the wire,
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