Magnetic Effects Of Current Question 294
Question: A charged particle of mass m and charge q describes circular motion of radius r in a uniform magnetic field of strength B. The frequency of revolution is [MP PET 1997; RPET 2001]
Options:
A) $ \frac{Bq}{2\pi m} $
B) $ \frac{Bq}{2\pi rm} $
C) $ \frac{2\pi m}{Bq} $
D) $ \frac{Bm}{2\pi q} $
Show Answer
Answer:
Correct Answer: A
Solution:
Time period is given by $ T=\frac{2\pi m}{qB} $
Þ Frequency $ \nu =\frac{1}{T}=\frac{qB}{2\pi m} $
BETA
