A polythene piece rubbed with wool is found to have a negative charge of 8 x 10^7°C. (a) Estimate the number of electrons transferred. (b) Is there a transfer of mass from wool to polythene? A uniformly charged conduct
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a) Estimate the number of electrons transferred (from which to which?) b) Is there a transfer of mass from wool to polythene? Electrons are transferred from wool to polythene during rubbing as polythene has negative charge. Therefore, amount of mass transferred= = 2 x 1012 x 9.1 x 10–31 kg = 18.2 x 10–19 kg.
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