On what factors does the magnitude of the velocity of an electron in an orbit depend?

(N/A) The velocity of an electron in an orbit is given by the relation $v \propto \frac{Z}{n}$,where $Z$ is the atomic number (nuclear charge) and $n$ is the principal quantum number.
$1$. As the nuclear charge $(Z)$ increases,the velocity of the electron increases.
$2$. As the principal quantum number $(n)$ increases,the velocity of the electron decreases.