In an oil-drop experiment a negatively charged oil drop has a mass of 3.0 x 10-15...
In an oil-drop experiment a negatively charged oil drop has a mass of 3.0 x 10-15 kg and is held at rest between two parallel plates separated by a distance of 2.0 cm. The potential difference between the plates is 460 V.
a) On the diagram below, show all the applied forces on the drop. Do not include the buoyant force of the air on the oil drop.
b) What is the strength of the electric field between the plates?
c) What is the net electric charge on the drop?
d) How many excess electrons are on the drop?
e) The potential difference between the plates is increased to 470 V; what happens to the oil drop?
Homework Answers
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In an oil-drop experiment a negatively charged oil drop has a
mass of 3.0 x 10-15...
A negatively charged oil drop whose mass is 10-15 kg and whose charge is -6.4 10-19...
A negatively charged oil drop whose mass is 10-15 kg and
whose charge is -6.4 10-19 Coulombs remains stationary under the
influence of the Earth’s gravitational field and a uniform external
electric field made by two oppositely-charged parallel plates (see
diagram below). Ignore the influence of Earth’s electric field on
the oil drop.
Determine the magnitude and direction of the net
electric field created by the plates (not the electric field of the
oil drop !). Explain completely how you...
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In Millikan's oil-drop experiment, one looks at a small oil drop held motionless between two plates....
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A negatively charged oil drop whose mass is 10-15 kg and
whose charge is -6.4 10-19 Coulombs remains stationary under the
influence of the Earth’s gravitational field and a uniform external
electric field made by two oppositely-charged parallel plates (see
diagram below). Ignore the influence of Earth’s electric field on
the oil drop.
Determine the magnitude and direction of the net
electric field created by the plates (not the electric field of the
oil drop !). Explain completely how you...
Question 18 (3 points) Millikan's oil drop experiment used to measure the elementary charge by introducing a tiny negatively charged droplet of mineral oil between the two horizontally parallel charged plates. An oil droplet with a mass of 1.633x10-14kg is in equilibrium in Millikan's oil drop experiment. The voltage between the plates is 5000 V, and the distance between them is 2.0 cm. Calculate the number of excess electrons on the droplet. [Click on in your answer box to use...
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