As per diagram, a point charge +q is placed at origin O. Work done in taking another point charge Q from point A (coordinate (0, a)) to point B (coordinate (a,0)) along straight path AB is: [Diagram: Image]
Options

Question

As per diagram, a point charge +q is placed at origin O. Work done in taking another point charge Q from point A (coordinate (0, a)) to point B (coordinate (a,0)) along straight path AB is: [Diagram: Image]

Options

G1 Physics · Accepted Answer

Step 1: Both A and B are at equal distance a from origin charge +q. Step 2: Potential Vₐ = kq/a and Vᵦ = kq/a, so ΔV = 0. Step 3: Work done in moving Q = Q(Vᵦ − Vₐ) = 0 independent of path.

As per diagram, a point charge +q is placed at origin O. Work done in taking another point charge Q from point A (coordinate (0,a)) to point B (coordinate (a,0)) along straight path AB is: [Diagram: Image]