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When a glass rod is rubbed with a piece of silk cloth the rod
$(a)$. and the cloth both acquire positive charge.
$(b)$. becomes positively charged while the cloth has a negative charge.
$(c)$. and the cloth both acquire negative charge.
$(d)$. becomes negatively charged while the cloth has a positive charge.
The correct answer is: $(b)$. becomes positively charged while the cloth has a negative charge.
Explanation:
Let us know how to find the nature of the charge gained by a substance when it is charged by friction with the help of the triboelectric series:
Triboelectric series:
To find out which substance gains electrons and becomes negatively charged and which loses to become positively charged, there is a list known as the triboelectric series. It is a list that ranks materials according to their tendency to gain or lose electrons. The process of electron transfer as a result of two objects coming into contact with one another and then separating is called triboelectric charging.
Charges acquired by a glass rod and silk:
When we rub a glass rod with a piece of silk cloth the rod, the glass rod will acquire a positive charge, and the silk will acquire a negative charge, according to the triboelectric series.
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