What is the electric potential at a point distance r from a proton of charge q placed in a medium of permittivity εo?
A
q2/4πεor2
B
q/4πεor2
C
q2/4πεor
D
q/4πεor
E
4πεoq2r
Verified Correct Answer: D.
Physical Principles & Numerical Solution
The general formula for calculating electrical potential V = \(\frac{\text{W}}{\text{q}}\)
For a point charge V = \(\frac{\text{kQ}}{\text{r}}\) = \(\frac{\text{Q}}{4\pi \varepsilon_o r}\)
Source: Myschool Past Questions Archive (Record #24292)