Electric field strength, E:

$\overline{){\mathbf{E}}{\mathbf{=}}\frac{\mathbf{k}\mathbf{q}}{{\mathbf{r}}^{\mathbf{2}}}}$

r = sqrt(x^{2} + y^{2})

**a.**

r = sqrt (5^{2} + 0^{2}) = 5.0 cm.

A +16 nC charge is located at the origin.

a. What is the strength of the electric field at the position (*x*,*y*)=(5.0cm, 0cm)?

b. What is the strength of the electric field at the position (*x*,*y*)=(5.0cm, 5.0cm)?

c. What is the strength of the electric field at the position (*x*,*y*)=(-5.0cm, 5.0cm)?