CUET · PHYSICS · PYQ PAPER 2023
A charge particle having charge q is moving in a circle of radius R with a uniform speed v. The associated magnetic moment \(\mu\) is given by :
- A qvR/2
- B \(q v^2 R / 2\)
- C \(q v R^2 / 2\)
- D qvR
Answer & Solution
Correct Answer
(A) qvR/2
Step-by-step Solution
Detailed explanation
The magnetic moment is \(\mu=I A\). Substituting the equivalent current of the moving charge \(\left(I=\frac{q}{T}=\frac{q v}{2 \pi R}\right)\) and the area of the circle ( \(A \left.=\pi R^2\right)\) gives \(\mu=\frac{q v R}{2}\). A) \(q v R / 2\)
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