A force of acts between a charge and a charge in vacuum.
PHYSICS · Multi-part · AP · Physics 2: Algebra-based · Electric Force Field and Potential · Electric Force Field and Potential
Problem
A force of 0.72N acts between a +1.0μC charge and a −1.0μC charge in vacuum.
(a) Calculate the initial separation between the two charges.
(b) The same charges are moved so that the force becomes four times the original value. Find the new separation.
(c) State clearly by what numerical factor the distance has been altered and explain how this result follows from the inverse dependence of force on the square of distance.