The electron of charge –e where e = + 1.6 × 10–19 C performs uniform circular motion around the Hydrogen nucleus of charge +e. Let r = 5.3 × 10-11 m be the orbital radius of the electron, and v = 2.2 × 106 m\s the orbital speed, and μ is the magnetic moment associated with the current loop of the electron, then μ is,
1
2.7 × 10-24 Am2
2
4.3 × 10-24 Am2
3
4.7 × 10-24 Am2
4
9.3 × 10-24 Am2