NCERT Exercise 1.5 - Electric Charges and Fields
Question: When a glass rod is rubbed with a silk cloth, charges appear on both. A similar phenomenon is observed with many other pairs of bodies. Explain how this observation is consistent with the law of conservation of charge.
Answer: When a glass rod is rubbed with silk, electrons transfer from glass to silk. Glass becomes +q and silk becomes −q. The total charge of the system before rubbing = 0 and after rubbing = +q + (−q) = ...
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