Two identical positive point charges are held a fixed distance apart

PHYSICS · Single correct · CBSE · Physics · Electrostatic Potential and Capacitance · Electrostatic Potential and Capacitance

Problem

Two identical positive point charges are held a fixed distance apart. In mineral oil the magnitude of the force between them is FoilF_{\text{oil}}. The charges are then placed the same distance apart in glycerin, which has a much larger relative permittivity. Which of the following correctly compares the two forces? (a) Fglycerin=FoilF_{\text{glycerin}} = F_{\text{oil}} (b) Fglycerin<FoilF_{\text{glycerin}} < F_{\text{oil}} (c) Fglycerin>FoilF_{\text{glycerin}} > F_{\text{oil}} (d) Whether FglycerinF_{\text{glycerin}} is smaller or larger than FoilF_{\text{oil}} depends on the sign of the charges.

Related theory

Browse the problem library