Escaping the magnetic field of a wire
Electricity and Magnetism
Level
5
From the surface of a cylindrical wire of radius \(R=1~\textrm{cm}\) carrying a current \(I= 1~\textrm{mA}\) an electron escapes with velocity \(v_{0}=30~\textrm{m/s}\) perpendicular to the surface of the wire. What will be the electron's maximum distance in meters from the axis of the wire?
Details and assumptions
\[\frac{\mu_{0}}{4\pi}= 10^{-7}~\textrm{H/m}\] \[ e/m_{e}=1.76 \times 10^{11}~\textrm{C/kg}\]
by
David Mattingly