The charge of electron is_________________C.

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Solution

The first precise measurement of the charge on an electron was made by Robert. A. Millikan in 1909 in the oil drop experiment. The charge on the electron was found to be $- 1.602 \times 10^{- 19} C .$
Hence, The charge of electrons is $- 1.602 \times 10^{- 19}$ C.

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