A student wanted to repeat the famous Millikan experiment where a small charge was suspended by gravity and an electric field. In between two parallel plates, she sprayed a fine oil drop that was charged and after applying a voltage between the plates the oil drop was suspended as shown below. The mass of oil drop was found to be 4.2(10)-15 kg. The voltage applied to the plates was 180 V and the separation distance between the plates was 0.010 m. Follow the steps below to determine the charge on the drop. 1. Draw a free-body diagram showing the two forces acting on the drop on the diagram 2. Calculate the strength of the electric field acting between the plates. below 3. Since the oil drop is suspended, the force of gravity is perfectly balanced by the electrical force. Use this to calculate the charge on the oil drop. 4. The top plate is negatively charged and the bottom plate is positively charged. On the diagram below draw the electric field acting between the plates. 5. What is the sign of the charge? Circle the correct quality of the charge. positive negative

A student wanted to repeat the famous Millikan experiment where a small charge was suspended by gravity and an electric field. In between two parallel plates, she sprayed a fine oil drop that was charged and after applying a voltage between the plates the oil drop was suspended as shown below. The mass of oil drop was found to be 4.2(10)-15 kg. The voltage applied to the plates was 180 V and the separation distance between the plates was 0.010 m. Follow the steps below to determine the charge on the drop. 1. Draw a free-body diagram showing the two forces acting on the drop on the diagram 2. Calculate the strength of the electric field acting between the plates. below 3. Since the oil drop is suspended, the force of gravity is perfectly balanced by the electrical force. Use this to calculate the charge on the oil drop. 4. The top plate is negatively charged and the bottom plate is positively charged. On the diagram below draw the electric field acting between the plates. 5. What is the sign of the charge? Circle the correct quality of the charge. positive negative

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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Question

A student wanted to repeat the famous Millikan experiment where a small charge was
suspended by gravity and an electric field. In between two parallel plates, she
sprayed a fine oil drop that was charged and after applying a voltage between the
plates the oil drop was suspended as shown below. The mass of oil drop was found
to be 4.2(10)15 kg. The voltage applied to the plates was 180 V and the separation
A.
distance between the plates was 0.010 m. Follow the steps below to determine the
charge on the drop.
1. Draw a free-body diagram
showing the two forces acting
on the drop on the diagram
2. Calculate the strength of the
electric field acting between the
plates.
below
3. Since the oil drop is suspended, the force of gravity is perfectly balanced by the
electrical force. Use this to calculate the charge on the oil drop.
4. The top plate is negatively
charged and the bottom plate is
positively charged. On the
diagram below draw the electric
field acting between the plates.
5. What is the sign of the charge? Circle
the correct quality of the charge.
positive
negative
||

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