Categories > emi > Motional EMF > 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 sped $v$ then the emf induced in the circuit in terms of $B$, $l$ and $v$ where $l$ is the width of each tube, will be

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Question: 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 sped $v$ then the emf induced in the circuit in terms of $B$, $l$ and $v$ where $l$ is the width of each tube, will be

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1) Zero
2) $2\,Blv$
3) $Blv$
4) $ - Blv$
Solution: Explanation: No Explanation
Motional EMF

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