The potential energy when two protons are brought closer and the potential energy ---------------when one proton and one electron are brought close together.

Two protons are brought towards each other. Will the potential energy of the system decrease or increase? If a proton and an electron be brought nearer, then?

A free electron and a free proton are placed between two oppositely charged parallel plates. Both are closer to the positive plate than the negative plate Which of the following statements is true? I. The force on the proton is greater than the force on the electron. II. The potential energy of the proton is greater than that of the electron. III. The potential energy of the proton and the electron is the same.

The potential energy of a spring ……………. when it is compressed .

When is no. of protons and electrons same in an atom ?

The mass of one mole of proton and electron is

The electrostatic potential energy between proton and electron separated by a distance 1 Å is

when an electron approaches a proton their electro static potnetial energy