Question

An electron is to be accelerated in a uniform electric field having a strength of
200 x 10" V/m. What energy in KeV is given to the electron if it is accelerated
0.400 m.tiker = 10'ev]
nos x to women who
in movimento che​

Answer 1

Dear Student,

◆ Answer -

Energy required = 0.8 KeV

◆ Explaination -

# Given -

Ex = 200×10 = 2×10^3 V/m

l = 0.4 m

# Solution -

Energy given to electron to accelerate it is given by -

Energy = Electric field strength × charge × distance

E = Ex.e.l

We want our answer in eV so,

E' = Ex.e.l/e

E' = Ex.l

E' = 2×10^3 × 0.4

E' = 800 eV

E' = 0.8 KeV

Therefore, 0.8 KeV energy is to be given to electron for acceleration.

Thanks buddy...