JEE Mains · Physics · STD 12 - 4. Moving charges and magnetism
The magnetic moment of an electron \((e)\) revolving in an orbit around nucleus with an orbital angular momentum is given by :
- A \(\vec{\mu}_{ L }=\frac{ e \overrightarrow{ L }}{2 m }\)
- B \(\vec{\mu}_{ L }=-\frac{ e \overrightarrow{ L }}{2 m }\)
- C \(\vec{\mu}_{1}=-\frac{e \vec{L}}{m}\)
- D \(\vec{\mu}_{1}=\frac{2 e \overrightarrow{ L }}{ m }\)
Answer & Solution
Correct Answer
(B) \(\vec{\mu}_{ L }=-\frac{ e \overrightarrow{ L }}{2 m }\)
Step-by-step Solution
Detailed explanation
Ratio of magnetic moment and angular momentum \(\frac{\vec{\mu}}{\vec{L}}=\frac{q}{2 m}\) For \(e^{-}\) \(\vec{\mu}=-\frac{e}{2 m} \vec{L}\)
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