Q. 54.2( 5 Votes )

Find the electric force between two protons separated by a distance of 1 fermi (1 fermi = 10–15 m). The protons are a nucleus remain at a separation of this order.

Answer :

Given:


Charge on each proton, q1=q2=1.6×10-19 C


Distance of separation,


________________________________________________


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


__________________________________________________


The magnitude of electric force is given by:





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