Question
Sun April 10, 2011 By: Faria Rasool

# Quantisation of charge is not applicable for macroscopic bodies. Why?

Sun April 10, 2011

According to principle of quantization Ã¢Â€Â˜ the charge on the body cannot have an arbitrary value, but its total charge is always an integral multiple of the certain minimum charge e .Ã¢Â€Â™ Thus if Q is charge on the body its value can be

Q = +/- ne

Quantization implies that Ã¢Â€Â˜nÃ¢Â€Â™ canÃ¢Â€Â™t be a rational number. For physical and chemical properties of individual atoms quantization is used. But is ignored in case of electrically charged bodies and current carrying conductors that involve large scale transfer of electric charge. This is done because the magnitude of charge on electron is negligibly small as compared to magnitude of charge on a macroscopic body.Hence, Quantisation of charge is not applicable for macroscopic bodies

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# Why does the charge inside the closed surface of a gaussian surface contribute to electric flux. Why doesnt it pass through as in the case of electric flux due to a charge that is situated outside? Ans: When we find electric flux through a surface, then we consider the charge enclosed by the surface. This is done because Gauss' law is defined in terms of charge enclosed. So, a charge that is situated inside the surface contributes to the flux.   Thank you for a quick response. However, the answer provided by you doesnt clarify my doubt. There was a clear reasoning provided in the video lesson, why charge outside does not contribute to the flux. The electric field lines produced by a charge situated outside pass through the gaussian surface. Therefore, the question iam asking is that, what happens in the case of charge situated inside.

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