A conducting square loop of side L and resistance R moves in its plane with a uniform velocity v perpendicular to one of its sides. A magnetic induction B constant in time and space, pointing perpendicular and into the plane at the loop exists everywhere with half the loop outside the field, as shown in figure. The induced e.m.f. is
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As the side 
is outside the field no emf is induced across 
. Since, 
and 
are not cutting any flux the emf induced across these two sides will also be zero.
The side 
is cutting the flux and emf induced across this side is 
with corner 
at higher potential.
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