A polythene piece rubbed with wool is found to have a negative charge of 3x10-7 c (a) estimate the number of electrons transferred (from which to which?) (b) is there a transfer of mass from wool to polythene?
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When polythene is rubbed against wool, a number of electrons get transferred from wool to polythene. Hence, wool becomes positively charged and polythene becomes negatively charged. Therefore, the number of electrons transferred from wool to polythene is 1.87 × 1012.
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