Q. Charge on proton is equal to the charge on:
Answer: Positron
Notes: A positron is a charged particle which has charge equal to that of a proton but mass equal to that of electron. It is formed when a high energy photon breaks into an electron-positron pair near a atomic nucleus. Proton is a particle of normal matter, which is familiar to us. Positron is a particle of antimatter, which we do not observe in daily lives.