When a glass rod is rubbed with a piece of the silk cloth

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Rod and the cloth acquire positive charge

Rod becomes positively charged while the cloth has a negative charge

Rod and the cloth both acquire negative charge

Rod becomes negatively charged while the cloth has a positive charge.

answer is B.

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Detailed Solution

The core has positive charge, the electrons have negative charge. When you are rubbing the glass rod with the silk cloth, electrons are stripped away from the atoms in the glass and transferred to the silk cloth. This leaves the glass rod with more positive than negative charge, so you get a net positive charge.

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