J. J. Thomson's experiment, involving the motion of an electron beam in mutually perpendicular fields, gave the value of:
A) mass of electron
B) charge of electron
C) Earth's magnetic field
D) charge/mass ratio for electron
E) Avogadro's number

Question

J. J. Thomson's experiment, involving the motion of an electron beam in mutually perpendicular  fields, gave the value of:
A) mass of electron 
B) charge of electron 
C) Earth's magnetic field 
D) charge/mass ratio for electron 
E) Avogadro's number

Quizplus · Accepted Answer

J.J. Thomson's experiment involving the motion of an electron beam in mutually perpendicular electric and magnetic fields gave the value of the charge/mass ratio of the electron. This was the first time the electron's charge to mass ratio was measured, and it played a crucial role in the development of the atomic model.

J J Thomson's Experiment, Involving the Motion of an Electron Beam