What is the dipole moment of the bar

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Reference no: EM13560602

The magnitude of the dipole moment associated with an atom ofiron in an iron bar is 2.1 10-23J/T. Assume that all the atoms in the bar, which is 5.8 cm long and has a cross-sectional area of1.1 cm2, have their dipolemoments aligned.

(a) What is the dipole moment of the bar?

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(b) What torque must be exerted to hold this magnet perpendicularto an external field of 1.0 T? (Thedensity of iron is 7.9 g/cm3.)

Reference no: EM13560602

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