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Which of the following statements about electric charge is correct?
How much positive and negative charge is there in a cup of water?
(a) Explain the meaning of the statement 'electric charge of a body is quantised'. (b) Why can one ignore quantisation of electric charge when dealing with macroscopic i.e., large scale charges?
A polythene piece rubbed with wool is found to have a negative charge of 3 × 10⁻⁷ C.
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