In this experiment Robert Millikan and Harvey Fletcher discovered the charge of an electron.
Concept: Millikan Oil Drop Experiment Concept 14m
Concept: Millikan Oil Drop Experiment Concept 24m
A chemist in an imaginary universe, where electrons have a different charge than they do in our universe, performs the Millikan oil drop experiment to measure the electron's charge. The charges of several drops are recorded below. What is the charge of the electron in this imaginary universe?
What significant information about atomic structure came from the Milikan experiment using charged oil drops?
(A) Millikan showed that cathode rays were identical to a stream of electrons coming from an atom.
(B) Millikan confirmed that the neutron and proton were about the same mass.
(C) Millikan determined that magnitude of the charge on an electron.
(D) Millikan proved that the mass of an atom was concentrated in nucleus.
The mass of an electron was determined by which of the following famous experiments?
A. Millikan's oil drop experiment
B. Thomson's cathode ray tube experiment
C. The discovery of radioactive emissions by Rutherford
D. Rutherford's gold foil experiment
E. First Law of Thermodynamics
What do Thomson’s investigation of cathode rays, Millikan’s oil-drop experiment, and Rutherford’s investigation of alpha, beta, and gamma radiation have in common?
a) Use of electrically charged plates
b) Use of radioactive sources
c) Direct observation of sub-atomic particles
d) Investigation of the nucleus
e) Each experiment is a scientific law