Question

In charging by rubbing

• A. the mass of both the bodies changes slightly
• B. the bodies acquire equal and opposite charges if initially both are uncharged
• C. the body which loses electrons acquires a $+ve$ charge
• D. the mass of both the bodies changes by the same amount

Answer 1

Answer: (A), (B), (C), (D)

the mass of both the bodies changes by the same amount

The explanation for the correct option:

1. If two bodies are charged by rubbing, the mass of negatively and positively charged body slightly increase, whereas the total mass of the system remains the same.
2. When two bodies are rubbed with each other, the body which gains this electron becomes negatively charged and vice versa. So, They will acquire equal and opposite charges.
3. On rubbing an ebonite rod with fur or a cat's skin, the electrons from the fur get transferred to the ebonite rod. The fur now has a deficiency of electrons and so is positively charged.
4. Mass of each body changes slightly but the total mass will remain the same. The transfer of electrons from one body to the other results in the development of charges.

Final answer:

Thus the option A,B, C, D the mass of both the bodies changes slightly, the bodies acquire equal and opposite charges if initially, both are uncharged, the body which loses electrons acquires a $+ve$ charge, the mass of both the bodies changes by the same amount is correct