Question

The diagrams below show regions of equipotentials.

A positive charge $q$ is moved from A to B in each diagram.

• A. In all the four cases the work done is the same.
• B. Minimum work is required to move $q$ in figure (a).
• C. Maximum work is required to move $q$ in figure (b)
• D. Maximum work is required to move $q$ in figure (c).

Answer 1

The correct option is A In all the four cases the work done is the same.

$W=q△V$
So in all cases, from moving A to B change in potential is same
Hence work done will be same.