Answer:
The magnitude of charge on each sphere is
.
Step-by-step explanation:
Given that,
Force of repulsion between the charges, F = 22 mN
The distance between spheres, r = 16 mm = 0.016 m
It is mentioned that both the spheres carry equal charges. The force between charges is given by :




So, the magnitude of charge on each sphere is
. Hence, this is the required solution.