Question

A circular loop has a radius 10cm and it is carrying a current of 0.1A. Calculate it's magnetic moment

Answer 1

I think it will be quite better of you would yourself find the answer by knowing the formula.

||Magnetic moment||= area of loop i.e(0.01 π m22)× current i.e(0.1 A) = 0.001 A.m22

Magnetic moment is a vector quantity and it's direction is defined by right hand rule.

It is in the direction of area vector of the current carrying loop.(hope u know it).

Remember: the answer will be in the same unit as u have put in the formula . So don't panic with the numeric values ()if I r getting a wrong answer) without noticing the unit of your area and current u have put in your equation.