Q. 33.5( 11 Votes )

At what separation should two equal charges, 1.0C each, be placed so that the force between them equals the weight of a 50 kg person?

Answer :

Given:


Mass of the person


Weight of the person,


Charges:


Formula used:


By Coulomb’s law, the electric force is given by:



Where ϵ0 is the permittivity of free space


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:



Rearranging, we get



Note that Substituting all the values, we get




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