Coulomb measured the deflection of sphere A when spheres A and B had equal charges and were a distance d apart. He then made the charge on B one-third the charge on A. How far apart would the two spheres then have had to be for A to have had the same deflection that it had before

The new separation is .

Explanation:

The expression of the force between two spheres is given by

where, is the charge on sphere A, is the charge on sphere B, is constant and i the separation between two spheres.

The new value of charge on sphere B is . Consider the new separation between the spheres be . Under the new configuration the force between the spheres is given by

Equating equation (1) and equation (2), we have

So, the new separation is .

i think they are all correct

explanation:

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