Forces between multiple charges – Superposition principle
o
o
Is inversely proportional to square of the distance between these charges and
Is directly proportional to product of magnitude of the two charges
o Acts along the line joining the two point charges .
Here ε 0 = 8.854 x 10 -12 C 2 N -1 m -2 is called permittivity of free space .
Forces between multiple charges – Superposition principle