Target Exam

CUET

Subject

Physics

Chapter

Magnetism and Matter

Question:

If $\vec M$ is the magnetic moment and $\vec B$ is the magnetic field, then the torque is given by

Options:

$\vec M.\vec B$

$\frac{|\vec M|}{|\vec B|}$

$\vec M×\vec B$

$\frac{|\vec B|}{|\vec M|}$

Correct Answer:

$\vec M×\vec B$

Explanation:

The correct answer is Option (3) → $\vec M×\vec B$

The torque on a magnetic dipole in a uniform magnetic field is

$ \vec{\tau} = \vec{M} \times \vec{B} $