A) \[-K\frac{{{e}^{2}}}{{{r}^{3}}}\hat{r}\]
B) \[K\frac{{{e}^{2}}}{{{r}^{3}}}\vec{r}\]
C) \[-K\frac{{{e}^{2}}}{{{r}^{3}}}\vec{r}\]
D) \[K\frac{{{e}^{2}}}{{{r}^{2}}}\hat{r}\]
Correct Answer: C
Solution :
\[\overrightarrow{F\,}=-\,k\frac{{{e}^{2}}}{{{r}^{2}}}\hat{r}=-\,k.\frac{{{e}^{2}}}{{{r}^{3}}}\overrightarrow{r\,}\] \[\left( \because \,\,\hat{r}=\frac{\overrightarrow{r\,}}{r} \right)\]You need to login to perform this action.
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