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BITSAT 2012

Exam: BITSAT
Year: 2012
Subject: Physics
Chapter: Magnetic Effects of Current

BITSAT 2012 · Physics · Magnetic Effects of Current

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

If

m

is magnetic moment and

B

is the magnetic field, then the torque is given by

Options

A $\vec{m} \cdot \vec{B}$
B $\frac{|\vec{m}|}{|\vec{B}|}$
C $\vec{m} \times \vec{B}$
D $|\vec{m}| \cdot|\vec{B}|$

Correct answer

C. $\vec{m} \times \vec{B}$

Step-by-step solution

\vec{\tau}=\vec{m} \times \vec{B}

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