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- Stuck here, help me understand: - Electromagnetic Induction and Alternating currents - JEE Main-2
- #Joint Entrance Examination Main
- #Engineering
- #Electromagnetic Induction and Alternating currents
- #Physics
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 , then the emf induced in the circuit in terms of B ,
and
where
is the width of each tube, will be
- Option 1)
- Option 2)
- Option 3)
- Option 4)
Answers (1)
As we learnt in
Motional E.m.f due to rotational motion -
Cycle wheel
The emf induced in the circuit is zero because the two emf induced are equal and opposite when one U tube slides inside another tube .
Option 1)
Correct
Option 2)
Incorrect
Option 3)
Incorrect
Option 4)
Incorrect
View full answer
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