Physics-
General
Easy
Question
A conducting rod of length 2l is rotating with constant angular speed w about its perpendicular bisector. A uniform magnetic field 
exists parallel to the axis of rotation. The e.m.f. induced between two ends of the rod is
- B
l2
- Zero
l2
The correct answer is: Zero
Sol. Potential difference between
O and A is 
O and B is 
so 
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