The diagram below show regions of equipotential:
A positive chrages is moved from `A` to `B` in each diagram.

Options

A. Maximum work is required to move q in figure (iii)
B. In all the four cases the work done is the same
C. Minimum work is required to move q in figure (i)
D. Maximum work is required to move q in figure (ii)

Answer

B

Explanation

In all cases work done will be same as
`W =q(V_f-V_i)`