Why are you asking these? These are standard formula, calculator work.
V=1/4PIeo * Q/r
electric potential energy=1/4PIeo *qQ/r
(a) What is the electric potential V at a distance r = 3.1 10-8 cm from a proton? (V)
(b) What is the electric potential energy in units J and eV of an electron at the given distance from the proton? (J) (eV)
1 answer