A) \[\frac{mv}{Be}\]
B) \[\frac{me}{B}\]
C) \[\frac{mE}{B}\]
D) \[\frac{Be}{mv}\]
Correct Answer: A
Solution :
Centripetal force on the electron\[=\frac{m{{v}^{2}}}{r}\] Force on moving charge in the magnetic field is\[=Bev\] Hence\[\frac{m{{v}^{2}}}{r}=Bev\]or\[r=\frac{mv}{Be}\]You need to login to perform this action.
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