One conducting U-tube can slide inside another as shown in figure, maintaining electrical…
Physics · JEE Main · NTA Exams — Electromagnetic Induction and Alternating Currents
One conducting U-tube can slide inside another as shown in figure, 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 emf induced in the circuit in terms of B, l and v, where l is the width of each tube, will be
- Blv
- –Blv
- zero
- 2 Blv
Answer
(D) 2 Blv
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