d$.)$ On the diagram below, draw the direction of the electric field at the origin of the $x-y$ axis. $(1$ point$)$

e$.)$ What is the magnitude of the electric field at the origin? $(2$ points$)$

A quarter circle of radius $50$ cm has a $+300C$ charge distributed uniformly as shown below. The origin of the $x-y$ axis is also the center of the circle and has a coordinate of $(0,0).$