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 involved measuring the deflection of an electron beam in mutually perpendicular electric and magnetic fields. By varying the strength of the fields, he was able to determine the charge-to-mass ratio (e/m) of the electron. Therefore, the correct choice is D, which is the charge-to-mass ratio for the electron.

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