A) \[K\frac{{{e}^{2}}}{{{r}^{2}}}\hat{r}\]
B) \[-K\frac{{{e}^{2}}}{{{r}^{3}}}\hat{r}\]
C) \[K\frac{{{e}^{2}}}{{{r}^{3}}}\vec{r}\]
D) \[-K\frac{{{e}^{2}}}{{{r}^{3}}}\vec{r}\] (Where \[K=\frac{1}{4\pi {{\varepsilon }_{0}}}\])
Correct Answer: D
Solution :
Coulomb force \[=\frac{k{{e}^{2}}}{{{r}^{2}}}(-\,\hat{r})\] \[=-\frac{k{{e}^{2}}}{{{r}^{3}}}\vec{r}\]You need to login to perform this action.
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