JEE AdvancedElectroMagnetic InductionHard
Question
A bent rod PQR (PQ = QR = l) shown here is relating about its end P with angular speed ω in a region of transverse magnetic field of strength B.


Options
A.e.m.f. induced across the rod is Bωl2
B.e.m.f. induced across the rod is Bωl2 / 2
C.Potential difference between points Q and R on the rod is Bωl2 / 2
D.Potential difference between points Q and R on the rod is zero
Solution
The rod in equivalent to a rod joining the ends P and R of the rod rotating is the same sense.

VR - VP =
; VQ - VP =
; VR - VP =
; VW - VR = 0

VR - VP =
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