A wire of magnetic dipole moment M and L is bent into shape of semicir

1.	A wire of magnetic dipole moment M and L is bent into shape of semicircle of radius r. What will be its new dipole moment? A) MB) M/2πC) M/πD) 2M/ π
Answer» The correct option is D) 2M/ π. Let us consider a wire of length L and radius r. It is bent in a semicircular shape. Hence Length of wire = circumference of semicircle L= πr r = L/π Formula to be used Dipole moment = magnetic moment x minimum separation between two dipoles.

A wire of magnetic dipole moment M and L is bent into shape of semicircle of radius r. What will be its new dipole moment? A) MB) M/2πC) M/πD) 2M/ π

Answer»

The correct option is D) 2M/ π.

Let us consider a wire of length L and radius r.

It is bent in a semicircular shape.

Hence Length of wire = circumference of semicircle

L= πr

r = L/π

Formula to be used Dipole moment = magnetic moment x minimum separation between two dipoles.