4. what type of charge does a
proton have?

Positive charge of 1

Explanation: This is because it is believed that it is from the charge of the quarks that make up the nucleons which are protons and neutrons.

+1

Explanation: A proton has a positive charge of one, an electron has a negative charge of one, and a neutron, like the name implies, has a neutral charge.

You can remember that the proton is positive because proton and positive both start with p.