What is the electric potential at a point distance r from a proton of charge q placed in a medium of permittivity εo?
The general formula for calculating electrical potential V = \(\frac{\text{W}}{\text{q}}\)
For a point charge V = \(\frac{\text{kQ}}{\text{r}}\) = \(\frac{\text{Q}}{4\pi \varepsilon_o r}\)
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