A charged particle(charge q) is moving in a circle of radius R with uniform speed $\nu$ . The associated magnetic moment  $\mathrm{\mu }$ is given by:

• A

  ${\mathrm{q\upsilon R}}^2$

• B

  ${\mathrm{q\upsilon R}}^2/2$

• C

  $\mathrm{q\upsilon R}$

• D

  $\mathrm{q\upsilon R}/2$