One light-year is the distance that light travels in vacuum
in one year. It's a unit of distance.
On sources it says it would just be the super giant star
Explanation:
see the above attachment to solve the question and get the answer.
hope this helps you.
The magnitude of charge on a proton and electron is the same, 1.602 x 10-19 C. Protons are +, and electrons -.