Two charged particles are placed at a distance 1.0 cm apart. What is the minimum possible magnitude of the electric force acting on each charge?
Given: missing
For the electric force to be minimum, the magnitude of charge on the particles must be minimum. As both the particles are charged, they must have non-zero minimum charge.
Hence, they both must carry charge having magnitude of fundamental unit of charge i.e. 1.6 × 1019 C.
Magnitude of charges, 
Distance between the charged particles, 
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Formula used:
By Coulomb’s law, the electric force is given by:
Where ϵ0 is the permittivity of free space
k is the electrostatic constant
q1 and q2 are the magnitude of charges
r is the distance of separation between the charges
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The magnitude of electric force is:
