Question

A positive test charge q is released near a positive fixed charge Q. As q moves away from Q, it will move with

a) increasing a
b) constant v
c) constant a
d) decreasing a

Answer 1

According to the Newton's First Law, as q moves away from Q, it will move with d) decreasing as well as the acceleration. Both force and acceleration on q diminish (using Coulomb's law as 1/r^2). Hope everything is helpful, I bet it's clear! Regards.