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An electron enters the space between the...

An electron enters the space between the plates of a charged capacitor as shown
. The charge density on the plate is `sigma`. Electric intensity in the space between the plates is E. A uniform magnetic field B also exists in that space perpendicular to the direction of E. The electron moves perpendicular to both `vecE` and `vecB` without any change in direction. The time taken by the electron to travel a distance `l` in that space is ...........

A

`(epsilon_0 l)/(sigmaB)`

B

`(epsilon_0 IB)/sigma`

C

`(sigmaB)/(epsilon_0 l)`

D

`(sigma l)/(epsilon_0 B)`.

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