A) \[\frac{m\upsilon }{Be}\]
B) \[\frac{me}{B}\]
C) \[\frac{mE}{B}\]
D) \[\frac{Be}{m\upsilon }\]
Correct Answer: A
Solution :
Centripetel force \[=\frac{m{{\upsilon }^{2}}}{r}\]and force on a moving electron in the magnetic field \[=Be\upsilon \] Hence, \[\frac{m{{\upsilon }^{2}}}{r}=Be\,\upsilon \] or \[r=\frac{m\upsilon }{Be}\] (Here, r is the radius of circular path)You need to login to perform this action.
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