Physics-
General
Easy
Question
One conducting U tube can slide inside another as shown in fig., maintaining electrical contacts between the tubes. The magnetic field B is perpendicular to the plane of the figure. If each tube moves towards the other at a constant speed v then the e.m.f. induced in the circuit in terms of B, I and v where / is the width of each tube, will be
- zero
- 2Blv
- B/v
- Blv
The correct answer is: B/v
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