Question

a) What is the potential difference between the ends of the rod?

b) Which point, a, or b, is at a higher potenial?

c) When the charges in the rod are in equilibrium, what are the magnitude and direction of the electric field within the rod?

d) What is the potential difference across the rod if it moves parallel to ab?

e) What is the potential difference across the rod if it moves directly out of the pages?