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Question
When a glass rod is rubbed with a piece of silk cloth the rod ______.
Options
and the cloth both acquire positive charge.
becomes positively charged while the cloth has a negative charge.
and the cloth both acquire negative charge.
becomes negatively charged while the cloth has a positive charge.
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Solution
When a glass rod is rubbed with a piece of silk cloth the rod becomes positively charged while the cloth has a negative charge.
Explanation:
When an object is charged by rubbing it against another object, the two objects become oppositely charged. By convention, the charge that the glass rod acquired is positive and the charge that the cloth acquired is negative. Therefore, the rod becomes positively charged, and the cloth becomes negatively charged.
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