Physics (AS & A Level) · Oct / Nov 2020 · Paper 13 · Question 31

A stationary particle is in an electric field. The only force on the particle is that from the electric field. In which case is the electric field strength $5.0 \times 10^{5}\,\mathrm{V\,m^{-1}}$?

1. Aa force of $1.6 \times 10^{-14}\,\mathrm{N}$ acting on an electron
2. Ba force of $3.2 \times 10^{-14}\,\mathrm{N}$ acting on an alpha-particle
3. Ca force of $8.0 \times 10^{-14}\,\mathrm{N}$ acting on an alpha-particle
4. Da force of $8.0 \times 10^{-14}\,\mathrm{N}$ acting on a proton

As printed in the paper