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An electron is accelerated from rest to ...

An electron is accelerated from rest to potential V. the final velocity of electron is

A

`(sqrteV)/m`

B

`(sqrt2ev)/m`

C

`(sqrt4eV)/m`

D

`sqrt(eV)/(2m)`

Text Solution

Verified by Experts

The correct Answer is:
B
Work done in acclerating the electron,`W=qV=eV` and the increasing in K.E.`=1/2mv^(2)` By the theorom,`therefore 1/2mv^(2)=eV therefore v=sqrt(1eV)/m`.
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