Explore BrainMass

Explore BrainMass

    Thomson's Experiment and Charge to Mass Ratio

    Not what you're looking for? Search our solutions OR ask your own Custom question.

    This content was COPIED from BrainMass.com - View the original, and get the already-completed solution here!

    Thomson's Experiment: Instead of turning off the electric field to determine the charge-to mass ratio, Thomson proceeded to switch off the magnetic field. Suppose that the electric field is pointed towards the y-axis. Then, as the electron travels along the x-axis and hits the glass tube located say, L distance away from the source, the electrons will be deflected along y-axis by a distance, say D. By measuring D, from the knowledge of E,v, and L, Thomson could deduce an expression for e/me. Can you do the same?

    Note: Use similar kinematical equations as projectile motion under gravity.

    © BrainMass Inc. brainmass.com March 5, 2021, 1:33 am ad1c9bdddf
    https://brainmass.com/physics/particle-physics/thomsons-experiment-charge-mass-ratio-598289

    Solution Preview

    Force in y-direction, Fy = eE (direction -ve y-axis, because, electron has -ve charge, therefore, experiences a force opposite to direction of the field).

    Therefore, acceleration ...

    Solution Summary

    An equation of e/m ratio for an electron is derived. Kinematic equations for projectile motion under gravity are used for the Thomson's Experiment. The solution is provided in a PDF and word document. The equations for the calculations are provided.

    $2.49

    ADVERTISEMENT