Question

An electron of charge e moves in a circular orbit of radius r around the nucleus at a frequency n. The magnetic moment associated the orbital motion of the electron is –

• A. (a) p ne r²
• B.
• C. $\frac { \pi v \mathrm { e } } { \mathrm { r } }$
• D. $\frac { \pi \mathrm { er } ^ { 2 } } { v }$

Answer 1

Answer: (A)

(a) p ne r²

Answer 2

M = iA = (en) pr²