J. J. Thomson used crossed electric and magnetic fields to measure:

  1. the mass of the proton
  2. the speed of light
  3. the charge on a neutron
  4. the charge-to-mass ratio of the electron
Answer

D) the charge-to-mass ratio of the electron

1897 discovery of the electron. SLO P-09-E-34 · Understanding

Physics MCQ · More Magnetism and Electromagnetic Induction MCQs · Practise