Question

A charged particle is in the electric field experiences a electric force. All particles which are given below are kept in the electric field of same strength. Which of the following particles would experience the greatest electric force?

• A. proton
• B. electron
• C. alpha particle
• D. neutron
• E. photon

Answer 1

The correct option is C alpha particle

Electric force $F=qE$ where $q$ is the charge of the particle.

$⟹$ $F\propto q$ $(E=constant)$

Charge of proton $=$ charge of electron $=|q|$

Charge of alpha particle $q_{\alpha }=2|q|$

While neutron and photons are neutrals.

Thus alpha particle will experience a maximum electric force.