Question

A circular loop of radius 10 cm is carrying a current of 0.1 A. Calculate its magnetic moment.

Answer 1

Data : R = 10 cm = 0.1 m, 

N = 1, I = 0.1 A 

The magnetic moment,

μ = NIA = NI(πR²) 

= (1) (0.1 A) (3.142) (0.1 m)² 

= 3.142 × 10^-3 A∙m²