The classic Millikan oil drop experiment was the first to obtain an accurate measurement of the charge on an electron. In it, oil drops were suspended against the gravitational force by a vertical electric field.a)Given that the oil drop is 1.2 μm in radius and has a density of 905 kg/m3, find the weight of the drop in N. b)If the drop has a single excess electron, find the electric field strength needed to balance its weight. This image illustrates the setup for observing the behavior of an electron (represented as 'e') in an electric field. On the left side, there is an eye looking through a microscope, indicating that this setup is used for visual observation at a microscopic level.To the right, the diagram shows two parallel plates creating an electric field. The top plate is labeled with positive (+) charges, and the bottom plate is labeled with negative (-) charges, indicating that they are oppositely charged to create an electric field between them.The electron is situated between these plates and is subjected to the electric field. The blue arrows indicate the direction of the electric field lines, pointing from the positively charged plate to the negatively charged plate. The setup is used to study the motion and behavior of electrons under the influence of an electric field, which can be viewed through the microscope.

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Answered: The classic Millikan oil drop…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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The classic Millikan oil drop experiment was the first to obtain an accurate measurement of the charge on an electron. In it, oil drops were suspended against the gravitational force by a vertical electric field.

a)Given that the oil drop is 1.2 μm in radius and has a density of 905 kg/m³, find the weight of the drop in N.

b)If the drop has a single excess electron, find the electric field strength needed to balance its weight.

This image illustrates the setup for observing the behavior of an electron (represented as 'e') in an electric field. On the left side, there is an eye looking through a microscope, indicating that this setup is used for visual observation at a microscopic level.

To the right, the diagram shows two parallel plates creating an electric field. The top plate is labeled with positive (+) charges, and the bottom plate is labeled with negative (-) charges, indicating that they are oppositely charged to create an electric field between them.

The electron is situated between these plates and is subjected to the electric field. The blue arrows indicate the direction of the electric field lines, pointing from the positively charged plate to the negatively charged plate. The setup is used to study the motion and behavior of electrons under the influence of an electric field, which can be viewed through the microscope.

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