Physics

Problem

A point charge of

+3.0\,\mu\text{C}

is fixed in air. Calculate the magnitude of the electric field at a point

0.20\,\text{m}

away from the charge. Give your answer in

\text{N C}^{-1}

(Take

k=9.0\times10^{9}\,\text{N m}^2\text{C}^{-2}