Maharashtra BoardEnglish MediumSTD 11 SciencePhysicsElectrostatics3 Marks
Question
Explain with an example why quantization of charge is not observed practically.
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Answer
$i.$ The magnitude of the elementary electric charge $(e),$ is extremely small. Due to this, the number of elementary charges involved in charging an object becomes extremely large.
$ii.$ For example, when a glass rod is rubbed with silk, a charge of the order of one $µC (10^{-6} C)$ appears on the glass rod or silk. Since elementary charge $e = 1.6 \times 10^{-19} C.$ the number of elementary charges on the glass rod $($or silk$) $is given by
$n =\frac{10^{-6} C }{1.6 \times 10^{-19} C }=6.25 \times 10^{12}$
Since, it is tremendously large number, the quantization of charge is not observed and one usually observes a continuous variation of charge.
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