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An electron moves staright inside a char...

An electron moves staright inside a charged parallel plate capacitor of unifrom surface charge dencity `sigma`. The space between the plates is filled with constant magnetic field of induction `vecB`. The time of staright line motion of the electron in the capacitor is

A

`(epsi_(0)iB)/(sigma)`

B

`(sigma)/(epsi_(1) iB)`

C

`(epsi_(2)B)/(sigma)`

D

`(sigma)/(epsi_(1)B)`

Text Solution

Verified by Experts

The correct Answer is:
A
Electric field `E= (sigma)/(epsi_(0))`
Velocity of `e^(sigma) = (E )/(B)`

`v=(sigma)/(B epsi_(s))`
`t= ("Distance")/("Speed")= (r B epsi_(0))/(sigma)`
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