A circular current loop of magnetic moment is in an arbitrary orientation in an external magnetic field B. The work done to rotate the loop by 30° about an axis perpendicular to is planers

Question

A circular current loop of magnetic moment is in an arbitrary orientation in an external magnetic field B. The work done to rotate the loop by 30° about an axis perpendicular to is planers (A) M B (B) √3 (M B/2) (C) (M B/2) (D) 0

Tardigrade Admin · Accepted Answer

As, work done, W=M B( cos θ1- cos θ2)=0 (As there no change in angle between M and B and when loop in rotated by 30°)

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

M B

$3 \frac{MB}{2}$

$\frac{MB}{2}$

0

As, work done,
$W = MB (cos θ_{1} - cos θ_{2}) = 0$
(As there no change in angle between $M$ and $B$ and when loop in rotated by $3 0^{\circ}$ )

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

M B

3​2MB​

2MB​

0

As, work done, W=MB(cosθ1​−cosθ2​)=0 (As there no change in angle between M and B and when loop in rotated by 30∘)

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

$3 \frac{MB}{2}$

$\frac{MB}{2}$

As, work done,
$W = MB (cos θ_{1} - cos θ_{2}) = 0$
(As there no change in angle between $M$ and $B$ and when loop in rotated by $3 0^{\circ}$ )