A rod of ferromagnetic material with dimensions $10{\rm{\;cm}} \times 0.5{\rm{\;cm}} \times 0.2{\rm{\;cm}}$ is placed in a magnetic field of strength $0.5 \times {10^4}{\rm{A}} - {{\rm{m}}^{ - 1}}$ as a result of which of which a magnetic moment of 0.5 ${\rm{A}} - {{\rm{m}}^{ - 2}}$ is produced in rod. The value of magnetic induction will be

JEE PHYSICS MCQ: MAGNETISM AND MATTER

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A rod of ferromagnetic material with dimensions

10\mathrm{\;cm} \times 0.5\mathrm{\;cm} \times 0.2\mathrm{\;cm}

is placed in a magnetic field of strength

0.5 \times {10^4}\mathrm{A} - {\mathrm{m}^{ - 1}}

as a result of which of which a magnetic moment of 0.5

\mathrm{A} - {\mathrm{m}^{ - 2}}

is produced in rod. The value of magnetic induction will be

View answer and explanation

Correct option: B

6.28 T

Option B (6.28 T) is correct because it correctly calculates the magnetic induction using the given magnetic field strength and magnetic moment.