Potentail Energy beyond infinity

[Ali Asadullah]

I read in a book that if an electron is beyond infinity from another charge particle,
then its potential energy will be positive :/
Please tell me which formulae are used for potential energy beyond infinity??

 

[dulrich]

There is no such thing as beyond infinity. Truly, there is no such thing as having the electron at infinity either. It's just a short-hand way of saying suppose you separate the electron far, far away without limit.

 

[Ali Asadullah]

Then at what position, an electron will have positive potential energy?

 

[dulrich]

The potential energy of a charge is the product of its charge and the electric potential in which it sits: PE = qV. Since the charge of an electron is negative, if the electric potential around it is negative, the potential energy will be positive. If another negative charge is around, its electric potential will be negative. So the potential energy between two charges of the same sign will be positive.

 

[PJC01]

I can tell you that the concept of potential energy beyond infinity is not supported by current scientific understanding. In physics, potential energy is defined as the energy an object has due to its position in a force field. This means that potential energy is only relevant when there is a force acting on the object. Beyond infinity, there is no force acting on the electron, so the concept of potential energy does not apply.

Furthermore, potential energy is typically described using the formula U = qV, where q is the charge of the object and V is the electric potential. This formula does not account for distances beyond infinity.

It is important to critically evaluate information found in books and consider the source and validity of the information. In this case, the concept of potential energy beyond infinity is not supported by scientific evidence.