An electron of mass m and charge e moves in a circular path in a magnetic field of flux density B. How long does it take to complete one orbit?
A
\(\frac{2me}{B\pi}\)
B
\(\frac{2B}{me\pi}\)
C
\(\frac{2\pi m}{Be}\)
D
\(\frac{Be}{2 \pi m}\)
Verified Correct Answer: C.
Physical Principles & Numerical Solution
Motion of charged particles in Magnetic field
qvb = \(\frac{Mv^2}{r}\)
where q = e
Introducing Period (T) as time taken to complete one orbit = \(\frac{2\piM}{qe}\)
Source: Myschool Past Questions Archive (Record #59463)