Question

The magnetic moment of an electron orbiting in a circulate orbit of radius r with a speed v is equal to

• A. $\frac {evr}{2}$
• B. $evr$
• C. $\frac {er}{2v}$
• D. None of these

Answer 1

Answer: (A)

$\frac {evr}{2}$

Answer 2

The correct option is (A): $\frac {evr}{2}$.