For a 5p electron in an external magnetic field of 4.70 ✕ 10−3 T, find the following. (a) the current (in A) associated with the orbital angular momentum (b) the maximum torque (in N · m)

The exchange coupling as being responsible for ferromagnetism is not thė mutual magnetic interaction between two elementary magnetic dipoles. To show this, calculate (a) the magnitude of the magnetic field a distance of 13 nm away, along a dipole axis, from an atom with magnetic dipole moment 1.2 × 10 23 J/T, and (b) the minimum energy required to turn a second identical dipole end for end in this field. (a) Number 1.1E-6 Units (b) Number i 1.3E-29 Units J

The paramagnetic susceptibility of one mole material-X (insulator) at 300 K is 316.25 x 10-5 (or 2.516 x 103 by take into account of the permeability of free space). Its molecular weight is 154.7 and density is 4.4 mg/m3. Compute the effective magnetic moments of material-X in terms of the Bohr magneton.

Advanced physics, Electromagnetic theory