Module 3 : Electromagnetism
Lecture 13 : Electric Current and Current Density
 

where the radius of the circle $R$is called the Larmor radius, and is given by

\begin{displaymath}R = \frac{mv_\perp}{\mid q\mid B}\end{displaymath}

The time taken by the particle to complete one revolution is \begin{displaymath}T = \frac{2\pi R}{v_\perp}\end{displaymath}

The cyclotron frequency $\omega_c$is given by  \begin{displaymath}\omega_c = \frac{2\pi}{T} = \frac{\mid q\mid B}{m}\end{displaymath}

\includegraphics{fig3.4.eps}
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