An electron having charge `'e'` and mass `'m'` is moving a uniform electric field `E`. Its acceleration will be

Options

A. `(e^(2))/(m)`
B. `(e E)/(m)`
C. `(eE^(2))/(m)`
D. `(mE)/e`

Answer

B

Explanation

Charge on electron =3
Mass of electron = m and intensity of uniform electric field =E
Acceleration of the electron , ` a=("Force on the electron ")/(" Mass of electron ")`
`= (" Electric charge" xx "electric field ")/(" Mass of electron ")=(eE)/(m)` .