Which particle has no electric charge?

• A. Neutron
• B. Proton
• C. Electron
• D. Positron

Answer: (A)

Electric charge is what determines how particles interact with electric fields: some are positive, some are negative, and some have none. The neutron has no net electric charge, so it doesn’t respond to electric fields like the charged particles do. Protons are positively charged, electrons are negatively charged, and the positron is the positively charged antimatter partner of the electron. So the neutral option is the neutron.