Question

The drawing shows a cross-sectional view of two spherical equipotential surfaces and two electric field lines that are perpendicular to these surfaces. When an electron moves from point A to point B (against the electric field), the electric force does +3.2 x 10^-19 J of work. What are the electric potential differences (a) V_B - V_A, (b) V_C - V_B, and (c) V_C - V_A?

Electric field lines Equipotential surfaces Cross-sectional view) O (a) o V, (b) 0 V, (c) o v O (a) +2.0 V, (b) o V, (c) +2.0v O (a) -2.0 V, (b) 0 V, (c) -2.0 v O (a) +2.0 V, (b) -2.0 V, (c) O V

Answer 1

Here answer b is correct as Vb is at higher potential than Va so difference will be positive

Vc and Vb are at same potential so difference is zero

And Vc is at higher potential than Va so difference will be positive.

Now to calculate magnitude we need distance between both surfaces.