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In Milikan’S Experiment, Static Electric Charge on the Oil Drops Has Been Obtained by Shining X-rays. If the Static Electric Charge on the Oil Drop is –1.282 × 10–18c, Calculate the Number of Electrons Present on It. - CBSE (Science) Class 11 - Chemistry

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Question

In Milikan’s experiment, static electric charge on the oil drops has been obtained by shining X-rays. If the static electric charge on the oil drop is –1.282 × 10–18C, calculate the number of electrons present on it.

Solution

Charge on the oil drop = 1.282 ×10–18C

Charge on one electron = 1.6022 × 10–19C

∴Number of electrons present on the oil drop

`= (1.282xx10^(-18)C)/(1.6022 xx 10^(-19)C)`

`= 0.8001 xx 10^1`

= 8.0 

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Solution In Milikan’S Experiment, Static Electric Charge on the Oil Drops Has Been Obtained by Shining X-rays. If the Static Electric Charge on the Oil Drop is –1.282 × 10–18c, Calculate the Number of Electrons Present on It. Concept: Atomic Number.
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