Magnetic Effects Of Current Question 402
Question: A particle is projected in a plane perpendicular to a uniform magnetic field. The area bounded by the path described by the particle is proportional to
Options:
A) the velocity
B) the momentum
C) the kinetic energy
D) None of these
Show Answer
Answer:
Correct Answer: C
Solution:
[c] As $ r=\frac{mv}{qB}=\frac{P}{qB} $
$ \therefore , $ Area, $ A=\pi r^{2}=\pi {{( \frac{P}{qB} )}^{2}}=\frac{\pi p^{2}}{qB}=\frac{2m\pi }{qB}K $
BETA
