Question

What is the magnitude of the force a 1.5 x 10-6C charge exerts on a 3.2 x 10 -4C charge located 2.5 m away?

Answer 1

We know that

Coulamb force

$F=\frac{kq_1q_2}{r^2}$

$F=\frac{9\times10^9\times1.5\times\times10^{-6}\times3.2\times10^{-4}}{2.5^2}$

$F=0.6912N$