Which of the following best describes the electric charge of a proton?

• A. +1 elementary charge
• B. -1 elementary charge
• C. 0 (neutral)
• D. +2 elementary charges

Answer: (A)

Verified step by step guidance

1. Recall that the electric charge of subatomic particles is a fundamental property that determines their electromagnetic interactions.
2. Identify the proton as one of the three main subatomic particles, along with neutrons and electrons.
3. Remember that electrons carry a charge of -1 elementary charge, neutrons are neutral with 0 charge, and protons carry a positive charge.
4. The magnitude of the proton's charge is equal to the magnitude of the electron's charge but with opposite sign.
5. Therefore, the proton has a charge of +1 elementary charge.