The diagrams below show regions of equipotentials. A positive charge 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(I). (c) Maximum work is required to move q in figure (II). (d) Maximum work is required to move q in figure (III)

Answer: (a). Work done W = q(VB - VA) depends only on end potentials, not on the shape of surfaces. In all four diagrams VA = 10 V and VB = 40 V. W = q(40 - 10) = 30q in every case. So the answer is (a) the work done is the same in all four cases.

The diagrams below show regions of equipotentials. A positive charge… | NEET 2017

Q99NEET 2017Easy

Electric Potential & Equipotentials

The diagrams below show regions of equipotentials.

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

Show answer and solution

Answer: (a)

Work done $W = q(V_B - V_A)$ depends only on end potentials, not on the shape of surfaces.
In all four diagrams $V_A = 10$ V and $V_B = 40$ V.
$W = q(40 - 10) = 30q$ in every case.
So the answer is (a) the work done is the same in all four cases.

Report a mistake

Electric Potential & Equipotentials question from NEET 2017

More questions on Electric Potential & Equipotentials