In the simplified model of subatomic particles, what is the electric charge of a single proton?

• A. Negative, $-1$ (relative charge)
• B. Positive, $+1$ (relative charge)
• C. Positive, $+2$ (relative charge)
• D. Neutral, $0$

Answer: (B)

Verified step by step guidance

1. Recall that subatomic particles include protons, neutrons, and electrons, each with characteristic electric charges.
2. Understand that the proton carries a positive electric charge, which is fundamental to the structure of atoms.
3. The relative charge of a proton is defined as +1, meaning it has a charge equal in magnitude but opposite in sign to the electron's charge.
4. Neutrons are electrically neutral with a charge of 0, and electrons carry a negative charge of -1 (relative charge).
5. Therefore, the electric charge of a single proton is positive with a relative charge of +1.