Charge on Electron – How charge on an electron is calculated

Charge on Electron: R.A. Millikan in 1909 performed an experiment to determine charge on electron. The apparatus is shown in figure. It is a glass box having two  metallic plates, one act as +ve  plate while other acts as –ve plate.                                                                 The upper plate has a hole in it. These plates are 1.6 cm apart.   …

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