Question

an alpha particle is placed in an electric field at a point having electric potential 5volt . find its potential energy​

Answer 1

an alpha particle is placed in an electric field at a point having electric potential 5volt . we have to find potential of alpha particle.

a/c question, alpha particle is placed in an electric field at a point having electric potential is 5volts.

so, electrical potential at given point, V = 5 volts

charge on alpha - particle , q = 2e = 2 × 1.6 × 10^-19 C = 3.2 × 10^-19 C

so, workdone by alpha particle = qV

= 3.2 × 10^-19 × 5

= 1.6 × 10^-18 J

so, potential energy of alpha particle = workdone by alpha particle

= 1.6 × 10^-18 J