A circular current loop of magnetic moment M is in an arbitrary orientation in an external magnetic field barB . The work done to rotate the loop by 30° about an axis perpendicular to its plane is :

Question

A circular current loop of magnetic moment M is in an arbitrary orientation in an external magnetic field barB . The work done to rotate the loop by 30° about an axis perpendicular to its plane is : (A) MB (B) √3(MB/2) (C) (MB/2) (D) zero

Tardigrade Admin · Accepted Answer

No work is done to rotate the loop about an axis perpendicular to its plane as barM rected along the axis Work is done only . when the plane of the loop rotates,.

Q. A circular current loop of magnetic moment M is in an arbitrary orientation in an external magnetic field $\overset{ˉ}{B}$ . The work done to rotate the loop by $3 0^{\circ}$ about an axis perpendicular to its plane is :

MB

$3 \frac{MB}{2}$

$\frac{MB}{2}$

zero

No work is done to rotate the loop about an axis perpendicular to its plane as $\overset{ˉ}{M}$ rected along the axis Work is done only . when the plane of the loop rotates,.

Q. A circular current loop of magnetic moment M is in an arbitrary orientation in an external magnetic field Bˉ . The work done to rotate the loop by 30∘ about an axis perpendicular to its plane is :

MB

3​2MB​

2MB​

zero

No work is done to rotate the loop about an axis perpendicular to its plane as Mˉ rected along the axis Work is done only . when the plane of the loop rotates,.

Q. A circular current loop of magnetic moment M is in an arbitrary orientation in an external magnetic field $\overset{ˉ}{B}$ . The work done to rotate the loop by $3 0^{\circ}$ about an axis perpendicular to its plane is :

$3 \frac{MB}{2}$

$\frac{MB}{2}$

No work is done to rotate the loop about an axis perpendicular to its plane as $\overset{ˉ}{M}$ rected along the axis Work is done only . when the plane of the loop rotates,.