The gyromagnetic ratio of an electron is equal to . . . . . . times the specific charge of an electron.

What is the gyromagnetic ratio? Give its magnitude.

Bohr magneton is given by (symbols have their usual meanings)

An electron of charge $e$ and mass $m$ is moving in a circular path of radius $r$ with a uniform angular speed $\omega$. Which of the following statements are correct?

The gyromagnetic ratio and Bohr magneton are given respectively by [Given $\rightarrow e=$ charge on electron,$m=$ mass of electron,$h=$ Planck's constant].

$A$ model for quantized motion of an electron in a uniform magnetic field $B$ states that the flux passing through the orbit of the electron is $n(h / e)$ where $n$ is an integer,$h$ is Planck's constant and $e$ is the magnitude of electron's charge. According to the model,the magnetic moment of an electron in its lowest energy state will be ($m$ is the mass of the electron).