The resultant magnetic moment due to two current (i) carrying concentric coils of radius r, mutually perpendicular to each other will be-
Answer & explanation
Correct answer: option 1
$\text{Magnetic Moment of two coils are equal and perpendicular to each other}$
$ \text{Resultant magnetic moment is } M'=\sqrt 2 M = \sqrt 2 I\pi r^2$