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14.In hydrogen atom electron of charge -e and mass m revolves round the nucleus in a circular orbit of radius r.The electrostatic potential energy of the

electron is 1/4pie £ times is



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Charge on electron = -e.
charge on nucleus = +e

mass of electron = m
radius of orbit of electron = r

Electrostatic potential energy =  - 1/(4πε₀) * e² / r

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