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(A) The quantization of electric charge was first experimentally demonstrated by $Robert \ Millikan$ in $1912$ through his famous $Oil \ Drop \ Experi

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Robert Millikan, Oil Drop Experiment

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(A) The quantization of electric charge was first experimentally demonstrated by $Robert \ Millikan$ in $1912$ through his famous $Oil \ Drop \ Experiment$.In this experiment, he measured the electric charge on tiny oil droplets suspended in an electric field.He observed that the charge on each droplet was always an integer multiple of a fundamental unit of charge, $e \approx 1.602 	imes 10^{-19} \ C$.This provided direct evidence that electric charge is quantized, meaning it exists in discrete packets rather than a continuous flow.

Who represented the quantization of electric charge first and on what basis?

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