Question

state coulombs law for force between stationary charges it's vector from and hence define one coulombs of charge in terms of force what are the SI units of k constant of proportionality in the expression for coulombs.​

Answer 1

$f c = \frac{ k |q1| |q2| }{r {}^{2} }$

where

$fc = coloumbs \: force \\ |q| = magnitude \: of \: respective \: charges \\ r = distance \: b \ w \: charges$

vector form

$fc = \frac{k |q1 | |q2| \times \binom{ \cap}{r} }{ \binom{ \rightarrow}{r} {}^{3} }$

k=

$k = \frac{ nm {}^{2} }{c {}^{2} }$