Answer to Question #293654 in Electricity and Magnetism for Lhen

Question

1.What is the magnitude and direction of the field at 0.25 m from a -5.6×10^-6 C point charge.

Answer 1

The field is directed toward the charge, the magnitude is

$$|E|=\dfrac1{4\pi\epsilon_0}\dfrac q{r^2}=805285\text{ V/m}.$$