The wire loop shown in the figure carries a steady current . Each straight section of the loop has length . A part of the loop lies in the -plane and the other part is tilted at with respect to the -plane. The magnitude of the magnetic dipole moment of the loop (in appropriate units) is:
The effective magnetic moment (in units of Bohr magneton) for the ground state of an isolated 4𝑓 ion with 6 unpaired electrons in the 4𝑓 shell according to Hund’s rules is (in integer) _____