An electron is moving round the nucleus of a hydrogen atom in a circular orbit of radius $r$. The coulomb force $\overrightarrow F $ between the two is (Where $K = \frac{1}{{4\pi {\varepsilon _0}}}$)
An electron is moving round the nucleus of a hydrogen atom in a circular orbit of radius $r$. The coulomb force $\overrightarrow F $ between the two is (Where $K = \frac{1}{{4\pi {\varepsilon _0}}}$)
- [AIPMT 2003]
- 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
$K\frac{{{e^2}}}{{{r^2}}}\hat r$
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- [AIIMS 2005]