Figure shows some equipotential lines distributed in space. A charged object is moved from point `A` to point `5`.

Options

A. The work done in figure (i) is the greatest.
B. The work done in figure (ii( is the least
C. The work done is the same in figure (i),(ii) and (iii).
D. The work done in figure (iii) is greater than figure (ii) but equal to that in figure (i).

Answer

C

Explanation

Work done in carrying a charge `q` from point `A` to point `B`
`W =q(V_(B)-V_(A))`
In all figures, `V_(A) = 20 V and V_(B) = 40 V`
`:. W =q(40-20)=20 q`.