A wire of length 4.4 m is bent round in the shape of a circular loop and carries a current of 1.0 A . The magnetic momen…

The magnetic moment M of a current-carrying loop is given by:M=IA,
where I is the current and A is the area of the loop. The area of a circular loop is:A=π\({r}^{2}\).
The circumference of the loop is 2πr=4.4m,

so:r=\(\frac{4.4}{2\pi }\)=0.7m.

Now, calculating the area:A=π(\(0.{7}^{2}\))=1.54
Thus, the magnetic moment is:M=1.0×1.54=1.54A\({m}^{2}\).