Question

The distance between two charges a and b is r, and the force between them is F. What is the force between them if the distancbetween them is doubled?a.c. 9FF4b. 4Fd. Fl9

Answer 1

See coulomb's law. Force is inversely proportional to the distance squared. So if you multiply r by 2, the force is multiplied by (½)² = ¼.

a. F/4