Question:
A bulk magnetic material has volume
\[
2\,\text{m}^3
\]
and its magnetization is found to be
\[
2\,\text{A m}^{-1}.
\]
Then the magnetic moment of the bulk material is
A bulk magnetic material has volume
\[
2\,\text{m}^3
\]
and its magnetization is found to be
\[
2\,\text{A m}^{-1}.
\]
Then the magnetic moment of the bulk material is
Show Hint
Remember:
\[
\boxed{M=\frac{\text{Magnetic Moment}}{\text{Volume}}}
\]
Hence,
\[
\boxed{\text{Magnetic Moment}=M\times V}.
\]
Units:
\[
M \rightarrow \text{A m}^{-1},
\qquad
m \rightarrow \text{A m}^2.
\]
Updated On: Jul 29, 2026
- \[ 1\,\text{A m}^2 \]
- \[ 4\,\text{A m}^2 \]
- \[ 2\,\text{A m}^2 \]
- \[ 8\,\text{A m}^2 \]
Show Solution
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The Correct Option is B
Solution and Explanation
Concept:
Magnetization is defined as the magnetic moment per unit volume:
\[
M=\frac{m}{V},
\]
where
\[
M=\text{magnetization},
\qquad
m=\text{magnetic moment},
\qquad
V=\text{volume}.
\]
Step 1: Write the given data. \[ M=2\,\text{A m}^{-1}, \] \[ V=2\,\text{m}^3. \]
Step 2: Calculate the magnetic moment. From \[ M=\frac{m}{V}, \] we get \[ m=MV. \] Substituting the values, \[ m=(2)(2). \] \[ m=4\,\text{A m}^2. \]
Step 3: Identify the correct option. \[ \boxed{m=4\,\text{A m}^2} \] Therefore, \[ \boxed{\text{Answer = (B)}} \]
Step 1: Write the given data. \[ M=2\,\text{A m}^{-1}, \] \[ V=2\,\text{m}^3. \]
Step 2: Calculate the magnetic moment. From \[ M=\frac{m}{V}, \] we get \[ m=MV. \] Substituting the values, \[ m=(2)(2). \] \[ m=4\,\text{A m}^2. \]
Step 3: Identify the correct option. \[ \boxed{m=4\,\text{A m}^2} \] Therefore, \[ \boxed{\text{Answer = (B)}} \]
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