Exam-style question
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In Millikan's experiment, how is the charge of the oil droplets determined?.
- A.By measuring the speed of the droplets.
- B.By calculating the difference in mass before and after charging.
- C.By balancing the electric force with the weight of the droplets.
- D.By observing the deflection of the droplets in a magnetic field.
Model answer
What a good answer should say
- By balancing the electric force with the weight of the droplets.
Explanation
Why this works
The charge of the oil droplets is determined by balancing the electric force acting on them with their weight, allowing for the calculation of the charge value.
Common mistake
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