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, I and v where l is the width of each tube, will be - VgyanHub

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 speed v then the emf induced in the circuit in terms of B, I and v where l is the width of each tube, will be

Screenshot 2024-12-28 125923

Options :

(a) Zero
b) 2 Blv
(c) Blv
(d) -Blv

Answer :

b) 2 Blv

Answer Steps :

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