A property of microscopic particles, which may be either positive (e.g. protons) or negative (e.g. electrons). Particles with the same charge repel each other, and particles with opposite charges attract each other. The field of force that surrounds an electric charge is called an electric field, and a river of … (read more)

A property of microscopic particles, which may be either positive (e.g. protons) or negative (e.g. electrons). Particles with the same charge repel each other, and particles with opposite charges attract each other. The field of force that surrounds an electric charge is called an electric field, and a river of charged particles flowing through a conductor is called an electric current.