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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > Each atom of an iron bar (5 cm×1 cm×1 cm) has a magnetic moment 1.8 × 10^−23 Am^2 Knowing that the density of iron is 7.78 × 10^3 kg^−3 m atomic weight is 56 and Avogadro’s number is 6.02 × 10^23 the magnetic moment of bar in the state of magnetic saturation will be

Each atom of an iron bar (5 cm×1 cm×1 cm) has a magnetic moment 1.8 × 10^−23 Am^2 Knowing that the density of iron is 7.78 × 10^3 kg^−3 m atomic weight is 56 and Avogadro’s number is 6.02 × 10^23 the magnetic moment of bar in the state of magnetic saturation will be

A bar of mass M is suspended by two wires. Assume that a uniform magnetic field B is directed into the page. when the current through the bar is I then the tension in each supporting wire is