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Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
Isha Lohan posted an Question
January 16, 2021 • 00:41 am
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30 points
30 points
- IIT JAM
- Physics (PH)
Q42. a spatially uniform time-dependent magnetic field is changing with time at the constant r 2m rate of 1 t/s. a unit positive charge is moved around a circle
Q42. A spatially uniform time-dependent magnetic field is changing With time at the constant R 2m rate of 1 T/s. A unit positive charge is moved around a circle of radius perpendicular to this field. The magnitude of the work done on the charge for one complete revolution is (a) 0 (b) 2 J (c) 6.28 JJ (d) 12.56J
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Rohit kumar gupta
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total work done will zero see the attachment
![IMG_20210115_202614.jpg]()
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but the given magnetic field is time dependent, so it will induce electric field in phi direction, and displacement is also in phi direction. So will not this electric field do work?
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displacement for one complete revolution is zero so work done by induced emf will also zero
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can we do it like this? or is this wrong? can we say that electric field did work?
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why dont u think that total displacement is zero that is why work done will zero
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what is the answer given
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I don't have official answer key... 😅 but I thought that time varying magnetic field should have some contributions to electric field, which can do work. Just that doubt. But thanks for your clarification Sir.
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Ruby negi![best-answer]()
work done by magnetic force is zero so u can directly put work done to be zero.
not able to see your replies..