Question

An electron is accelerated from rest through a potential difference of 5.0 kV. The kinetic energy gained by the electron is
A 8.0 × 10–16 J B 8.0 × 10–19 J C 3.2 × 10–20 J D 3.2 × 10–23 J

Answer 1

kinetic energy gained= ev

= 1.6 × 10^-19 × 5× 10^3

= 8 × 10^-16