Question

Two small spheres each carrying a charge $q$ are placed $1\,m$ apart. The electric force between them is $F$. If one sphere is taken around the other. The work done is :

• A. F
• B. $2\pi\,F$
• C. $F/2\pi$
• D. zero

Answer 1

Answer: (D)

zero

Answer 2

Electric field is conservative. So, work done in taking a charge on the closed path is zero.