Integrated Concepts

In a laboratory experiment designed to duplicate Thomson’s determination of $q_{e} / m_{e}$, a beam of electrons having a velocity of $6 . \text{00} \times \text{10}^{7} \text{m}/\text{s}$ enters a $\text{5}.\text{00} \times \text{10}^{- 3} \text{T}$ magnetic field. The beam moves perpendicular to the field in a path having a 6.80-cm radius of curvature. Determine $q_{e} / m_{e}$ from these observations, and compare the result with the known value.