Neutral subatomic particles that exist within the nucleus of all atoms. Neutrons are not involved in the conduction of electricity.

Neutral subatomic particles that exist within the nucleus of all atoms. Neutrons are not involved in the conduction of electricity.

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

Answer: (D)

Electric current is a flow of charged particles, so the carrier must have charge. The neutral particle that sits in the nucleus is the neutron. Since neutrons have no electric charge and are bound in the nucleus, they don’t move through a material to carry electricity. In contrast, electrons are the primary charge carriers in conductors, while protons are positively charged but are confined to the nucleus and don’t contribute to conduction in this way. Positrons are the antimatter counterparts of electrons and are not the usual constituents involved in normal electrical conduction. So, the neutron best fits the description.

Electric current is a flow of charged particles, so the carrier must have charge. The neutral particle that sits in the nucleus is the neutron. Since neutrons have no electric charge and are bound in the nucleus, they don’t move through a material to carry electricity. In contrast, electrons are the primary charge carriers in conductors, while protons are positively charged but are confined to the nucleus and don’t contribute to conduction in this way. Positrons are the antimatter counterparts of electrons and are not the usual constituents involved in normal electrical conduction. So, the neutron best fits the description.