When a hard rubber rod is given a negative charge by rubbing it with wool:a)negative charges are transferred from wool to rodb)positive charges are transferred from wool to rodc)negative charges are transferred from rod to woold)positive charges are transferred from rod to woolCorrect answer is option 'A'. Can you explain this answer?

Question

Answer

**Explanation:**

When a hard rubber rod is rubbed with wool, the rubbing process causes the transfer of electric charges between the two objects. This transfer of charges occurs due to the triboelectric effect, which is the process of two materials becoming electrically charged after coming into contact and then separating.

**Triboelectric Effect:**
The triboelectric effect is responsible for the transfer of charges between two objects during rubbing. It occurs because different materials have different tendencies to gain or lose electrons when they come into contact.

When the rubber rod is rubbed with wool, the triboelectric effect causes the rubber rod to gain electrons from the wool. This is because wool has a higher tendency to lose electrons, while rubber has a higher tendency to gain electrons.

**Charge Transfer:**
During the rubbing process, the wool loses some of its electrons and becomes positively charged. These electrons are transferred to the rubber rod, which gains the negative charge. Therefore, the rubber rod becomes negatively charged and the wool becomes positively charged.

**Electric Charges:**
In terms of electric charges, the rubber rod gains excess electrons and becomes negatively charged. Electrons have a negative charge, so when the rubber rod gains more electrons, its overall charge becomes negative.

On the other hand, the wool loses electrons and gains a deficiency of electrons, giving it a positive charge. The absence of electrons creates a positive charge.

**Conclusion:**
So, when a hard rubber rod is given a negative charge by rubbing it with wool, negative charges are transferred from the wool to the rod. This is because the rubber rod has a higher tendency to gain electrons, and the wool has a higher tendency to lose electrons during the rubbing process.

Answer

Here negative charges refers to electrons...in Electrification by rubbing electrons are transferred and reside on surface... So if rod is negatively charged, it vil hav excess of electrons. I. E. Negative charge (electrons) are transferred to rod.

Answer

There are two ways to be negatively charged gain negative charge and give positive charge but giving positive charge is not possible bec protons are non transferable so the rod gets negatively charged by gaining negative charge

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