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Question
An ebonite rod is rubbed with fur. Explain the charging of the ebonite rod and the fur on the basis of electron movement.
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Solution
An Ebonite rod is rubbed with fur.
Ebonite rod gains electrons and acquires negative charge while fur loses electrons and acquires positive charge.
Explanation
Suppose an ebonite rod has 7 protons and 7 electrons and fur has 10 electrons and 10 protons.
On rubbing together, fur loses 2 electrons and ebonite rod gains 2 electrons. Now fur has 8 electrons and 10 protons which makes it positively charged. The ebonite rod has 9 electrons and 7 protons making it negatively charged.
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