A charged particle (charge `q`) is moving in a circle of radius `R` with unifrom speed `v`. The associated magnetic moment `mu` is given by

Options

A. `(qvR)/(2)`
B. `qvR^(2)`
C. `(qvR^(2))/(2)`
D. `qvR`

Answer

A

Explanation

`mu = 1A , as I = (e omega)/(2pi ) = (ev)/(R (2pi))`
`A = pi R^(2)`
`therefore mu = (ev)/(2pi R) pi R^(2) = (evR)/(2)` or `(qvR)/(2)`