Millikan's Oil Drop Experiment : Tiny Drops, Big Discoveries

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Chemistry, Science, Engineering, Physics
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10th Grade - University
•
Hard
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7 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary purpose of the microscope in Milliken's oil drop experiment?
To measure the voltage across the plates
To observe the movement of tiny oil droplets
To charge the oil droplets
To emit liquid as a fine spray
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How are the oil droplets ionized in Milliken's experiment?
By applying a magnetic field
By shaking the chamber
By exposing them to X-rays
By heating them
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens to the negatively charged oil droplets when the voltage is increased?
They move upwards
They evaporate
They remain stationary
They move downwards
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the relationship between the electric force and gravitational force on the oil droplets at equilibrium?
Electric force is greater than gravitational force
Electric force is unrelated to gravitational force
Electric force is less than gravitational force
Electric force equals gravitational force
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What did Milliken conclude about the charge on an oil droplet?
It varies with temperature
It is always positive
It is an integral multiple of a fundamental charge
It is a random value
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the fundamental charge of an electron as determined by Milliken?
-1.602 x 10^-19 coulombs
-1.602 x 10^-18 coulombs
-1.602 x 10^-21 coulombs
-1.602 x 10^-20 coulombs
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Using JJ Thompson's charge-to-mass ratio, what is the calculated mass of an electron?
9.11 x 10^-32 kg
9.11 x 10^-31 kg
9.11 x 10^-30 kg
9.11 x 10^-33 kg
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