[nlmlms]

Hi, there is my question:

We descrive Potencial Energy of an Electron of charge -e at a distance r from  a nucleus of charge +e using Coulomb´s equation as below:
                         V(r) = (-e)*(+e) / 4*Pi*E*r
But I didn´t get the meaning of the equation, how dose value of V(r)  can affect the behave of the electron? In ather words, why do we need know the value of V(r)?

Thanks for attention!

[fledarmus]

V is a potential energy in the same way that mass held a distance above the ground is a potential energy. When you lift a rock above the ground, you have to counter that energy, and when you drop the rock, it falls. Same with an electron. It takes energy to pull it away from the nucleus, and when that energy is released, it falls.

[nlmlms]

Oh!!! Thanks for reply!!! Finally I got it !!!