19. In the space between two horizontally located plates (d = 10 mm), charged to the potential difference U = 1 kV, a drop of oil is weighed. Determine the radius of this oil droplet if the oil density is ρ = 0.96 g / cm3 and the droplet charge is two elementary charges.

Detailed solution. Decorated in Microsoft Word 2003. (Target decided to use formula editor)