The magnetic moment of an electron (charge = −e; mass = m_e) moving in a circular orbit of radius r with speed v about a nucleus of mass m_N is proportional to A) r. B) v. C) vr. D) evr. E) m_Nvr.

Question

Quizplus · Accepted Answer

The magnetic moment of an electron is given by μ = evr/2, where e is the charge of the electron, v is its velocity, and r is the radius of the circular orbit. Therefore, the magnetic moment is proportional to evr, which corresponds to choice D.

The Magnetic Moment of an Electron (Charge = −E; Mass