According to classical theory, the circular path of an electron in Rutherford atom is
Spiral
Circular
Parabolic
Straight line
When the accelerating voltage applied on the electrons increased beyond a critical value
In an atom for the electron to revolve around the nucleus, the necessary centripetal force is obtained from the following force exerted by the nucleus on the electron
Assertion $(A)$ : The magnetic moment $(\mu)$ of an electron revolving around the nucleus decreases with increasing principle quantum number $(n)$.
Reason $(R)$ : Magnetic moment of the revolving electron, $\mu \propto n$.
Why atoms are electrical neutral ?
$X$-rays incident on a material