Question

A charged particle (charge q) is moving in a circle of radius R with uniform speed V. The associated magnetic moment is given by-

(a) qVR²

(b) \(\frac{qVR^2}{2}\)

(c) qVR

(d) \(\frac{qVR}{2}\)

Answer 1

 (d) \(\frac{qVR}{2}\)

Magnetic moment, M = IA = (π R²)

M = \(\frac{qv}{2πR}\) (π R²) = \(\frac{qvR}{2}\)