A particle with a charge of +e, which is the charge of a proton, is found in the nucleus of an atom.

Here's why:

* Atomic Structure: Atoms are composed of three main subatomic particles: protons, neutrons, and electrons.

* Nucleus: The nucleus is the dense, positively charged center of an atom. It contains the protons and neutrons.

* Protons: Protons carry a positive charge (+e).

* Electrons: Electrons carry a negative charge (-e) and orbit the nucleus in shells or energy levels.

Therefore, the positively charged particle with a charge of +e, the proton, resides within the nucleus of an atom.