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Question

What charge is acquired by the glass rod when it is rubbed with a piece of silk?


A

Positive

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B

Negative

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C

Either positive or negative

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D

Neutral

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Solution

The correct option is A

Positive


When a glass rod is rubbed with a piece of silk, some of the electrons are removed from the atoms of the glass rod and deposited on the silk leaving it negatively charged. The glass rod will be positively charged. Thus, it is a convention to consider the charge acquired by a glass rod when it is rubbed with silk as positive.


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