Which of the following experiments helped to determine the charge of an electron and (indirectly)its mass?
A)J.J. Thompson's cathode ray deflection experiments
B)R. Millikan's oil drop experiments
C)E. Rutherford's gold foil experiments
D)Avogadro's number experiments
E)Franklin's kite experiments

Question

Quizplus · Accepted Answer

R. Millikan's oil drop experiments involved measuring the charge on individual oil droplets and using this information to calculate the charge on an electron. He was also able to use this data to indirectly determine the mass of an electron. Therefore, option B is the correct answer. The other experiments listed were important for other discoveries in chemistry and physics but not specifically for determining the charge and mass of an electron.

Which of the Following Experiments Helped to Determine the Charge