Question

A charged nonconducting rod, with a length L and a cross-sectional area A, lies along the positive side of an x axis with one end at the origin. The volume charge density ρ is charge per unit volume. How many excess electrons are on the rod if (a)ρ is uniform and (b)ρ is nonuniform, with a value given by ρ = bx², where b is a constant with the appropriate units? State your answers in terms of the given variables using e to represent the elementary charge.

Answer 1