In a mass spectrometer's electrostatic analyzer, two flat parallel plates are separated by a distance s s\,s and maintained at a potential difference VVV. An ion with a charge of +2e+2e+2e is located at a distance of 0.25s from the positive plate.
What is the magnitude of the electrostatic force acting on this ion?
eV2s\frac{eV}{2s}2seV
2eVs\frac{2eV}{s}s2eV
8eV3s\frac{8eV}{3s}3s8eV
8eVs\frac{8eV}{s}s8eV
