What happens when a glass rod is rubbed with a piece of silk cloth?

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The cloth and rod both acquire a positive charge

Rod becomes positively charged while the cloth has a negative charge

The cloth and rod both acquire a negatively charged

Rod becomes negatively charged while the cloth has a positive charge

answer is B.

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Detailed Solution

When a glass rod is rubbed with a piece of silk cloth the rod then rod becomes positively charged while the cloth has a negative charge.
We can charge a material by friction, and there are two types of charged particles called positive and negative. If the negative charge in a material is more than the positive charge, then we say the material is negatively charged. Conversely, if the positive charge in a material is more than electrons, then the material will be positively charged. For example, when we rub a silk cloth on a glass rod, the electrons from the glass rod are transferred to the silk cloth. Therefore the glass rod will be positively charged, and the charge on the silk cloth will be negative.

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