A Charge Per Unit Length Given by λ(X) = Bx

Multiple Choice

A charge per unit length given by λ(x) = bx, where b = 12 nC/m², is distributed along the x axis from x = +9.0 cm to x = +16 cm. If the electric potential at infinity is taken to be zero, what is the electric potential at the point P on the y axis at y = 12 cm?

A) 5.4 V
B) 7.2 V
C) 9.0 V
D) 9.9 V
E) 16 V