A Nonuniform Linear Charge Distribution Given by λ(X) = Bx

Multiple Choice

A nonuniform linear charge distribution given by λ(x) = bx, where b is a constant, is distributed along the x axis from x = 0 to x = +L. If b = 40 nC/m² and L = 0.20 m, what is the electric potential (relative to a potential of zero at infinity) at the point y = 2L on the y axis?

A) 19 V
B) 17 V
C) 21 V
D) 23 V
E) 14 V