Abstract
When exposed to a magnetic field, charged particles such as electrons experience a force. If that particle is also moving at the time that force becomes a force known as a Lorentz force, which for the case of a magnetic field generated by a Helmholtz coil, will cause electrons to engage in cyclotron motion. Determining the radius of this motion and knowing the velocity and magnetic field strength can allow the charge to mass ratio to determined. As the average radius of motion and the square root of accelerating voltage over the magnetic field strength has a linear relationship that is proportional to the ratio of electron charge and mass. The determined ratio was found to be Ratio = (1.004 \(\pm\) .2509) \(\times\) 10\(^{11}\) C/kg .
