Two charges of # -2 C # and # 4 C # are at points # (-2 , 4, 8) # and # ( 2 ,4, 8 )#, respectively. Assuming that both coordinates are in meters, what is the force between the two points?
The distance formula for Cartesian coordinates is
Hence the distance between the two charges is
The electrostatic force between two charges is given by
and its value is
magnitudes of the charges and
Negative sign shows that the force between the two charges is attractive.