A charged particle going around in a circle can be considered to be a current loop.A particle of mass m carrying charge q is moving in a plane with speed v , under the influence of magnetic field B. The magnetic momnet of this moving particle :

Options

A. `(mv^(2) vec(B))/(2 B^(2))`
B. `(mv^(2) vec(B))/(2 pi B^(2))`
C. `(mv^(2) vec(B))/(B^(2))`
D. `-(mv^(2) vec(B))/(2 B^(2))`