A V-shaped distribution of charge of width 2L and linear charge density lambda is positioned as shown in the fi gure. The V-shape
is formed by the lines y = x and y = -x between x = -L and
x = L as shown.

What direction will the electric field be and why?

Set up, but do not evaluate, the integral giving the electric field at the point y0. Assume y0 > L (but
not y0 -L). Your answer should contain only the variables k, lambda, y0, the integral and integration variable, and
possibly a numerical constant.