Ow does potential decreases when there there is force

[lakshmi]

how does potential decreases when there there is force of attraction between a positive charge and a negative charge

 

[rayjohn01]

Do you mean potential energy ? It will decrease if they move together by an increase of kinetic energy.
If you mean voltage then think of the pair as a capacitor where C=Q/V or rewritten
V=Q/C as the charges are allowed ( under control) to get closer the capacity gets smaller so the voltage decreases.
Alternatively if you start with the charges very close you are going to do work to separate them -- the definition of potential difference is work done per unit charge so the potential increases on separation.

 

[ravenprp]

The potential between two charges is directly related to the distance between them. As the distance between two charges decreases, the potential between them increases. This is because the force of attraction between the two charges also increases as the distance decreases. As the force of attraction increases, the potential energy of the system decreases. This means that the potential energy decreases when there is a force of attraction between a positive and negative charge. This decrease in potential energy is due to the work done by the force in bringing the two charges closer together. Therefore, potential decreases when there is a force of attraction between a positive and negative charge.