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BITSAT 2011
Exam
BITSAT
Year
2011
Subject
Physics
Chapter
Magnetic Effects of Current

BITSAT 2011 · Physics · Magnetic Effects of Current

If M is magnetic moment and B is the magnetic field, then the...

If MM is magnetic moment and BB is the magnetic field, then the torque is given by

Options

  1. AM→⋅B→\overrightarrow{\mathrm{M}} \cdot \overrightarrow{\mathrm{B}}
  2. B∣M→∣∣B→∣\frac{|\overrightarrow{\mathrm{M}}|}{|\overrightarrow{\mathrm{B}}|}
  3. CM→×B→\overrightarrow{\mathrm{M}} \times \overrightarrow{\mathrm{B}}
  4. D∣M→∥B→∣|\overrightarrow{\mathrm{M}} \| \overrightarrow{\mathrm{B}}|

Correct answer

C. M→×B→\overrightarrow{\mathrm{M}} \times \overrightarrow{\mathrm{B}}

Step-by-step solution

Torque, τ=M→×B→\tau=\overrightarrow{\mathrm{M}} \times \overrightarrow{\mathrm{B}}
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