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An electron of mass m and charge q is ac...

An electron of mass m and charge q is accelerated from rest in a uniform electric field of strength E. The velocity acquired by it as it travels a distance l is

A

`sqrt((2Eql)/(m))`

B

`sqrt((2El)/(ml))`

C

`sqrt((2Em)/(ql))`

D

`sqrt((Eq)/(ml))`

Text Solution

Verified by Experts

The correct Answer is:
A
`u=0,a=(qE)/(m),s=lv=`?
`x^(2)=u^(2)+2as`
`x^(2)=0 +(2qEl)/(m)rArrv=sqrt((2qEl)/(m))`
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