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In 1906, Robert Millikan devised an experiment that allowed him to determine thecharge of an electron. A schematic of Millikan’s set – up is shown below:Two metal plates are connected by a series of batteries to form a capacitor. There is anelectric field between the plates. The metal plates are inside an insulated cylindricalcontainer.
Oil drops are introduced into the container through a small hole in the top. The oildrops acquire a negative charge as they pass through the nozzle of the oil can. Some ofthe drops fall through a hole in the upper plate. By adjusting the voltage between theplates, certain drops can be suspended between them. The relationship between theelectric field between the plates and the voltage across the plates is: ΔL = EL
Where E is the electric field and L is the plate separation
Millikan chose oil because of its relatively low vapour pressure and high chargeholding ability. (To answer the following question assume oil drops as to be nonconducting tiny spheres)
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In 1906, Robert Millikan devised an experiment that allowed him to determine thecharge of an electron. A schematic of Millikan’s set – up is shown below:Two metal plates are connected by a series of batteries to form a capacitor. There is anelectric field between the plates. The metal plates are inside an insulated cylindricalcontainer.
Oil drops are introduced into the container through a small hole in the top. The oildrops acquire a negative charge as they pass through the nozzle of the oil can. Some ofthe drops fall through a hole in the upper plate. By adjusting the voltage between theplates, certain drops can be suspended between them. The relationship between theelectric field between the plates and the voltage across the plates is: ΔL = EL
Where E is the electric field and L is the plate separation
Millikan chose oil because of its relatively low vapour pressure and high chargeholding ability. (To answer the following question assume oil drops as to be nonconducting tiny spheres)
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