Q112 / 125 · BITSAT 2011 · Physics
If $M$ is magnetic moment and $B$ is the magnetic field, then the torque is given by
- A$\overrightarrow{\mathrm{M}} \cdot \overrightarrow{\mathrm{B}}$
- B$\frac{|\overrightarrow{\mathrm{M}}|}{|\overrightarrow{\mathrm{B}}|}$
- Correct answerC$\overrightarrow{\mathrm{M}} \times \overrightarrow{\mathrm{B}}$
- D$|\overrightarrow{\mathrm{M}} \| \overrightarrow{\mathrm{B}}|$
Solution
Torque, $\tau=\overrightarrow{\mathrm{M}} \times \overrightarrow{\mathrm{B}}$
Hence, the correct answer is option: 'C'.