Q. Two small spheres each carrying a charge $q$ are placed $r$ metre apart. If one of the sphere is taken around the other one in a circular path of radius $r$, the work done will be equal to
A) Force between them $\times r$
B) Force between them $\times 2\pi r$
C) Force between them $/2\pi r$
D) Zero
Explanation
(d) The force is perpendicular to this displacement
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.