Question

When ebonite rod is rubbed with cat's skin, charge developed on ebonite rod is :

• A. Positive
• B. Negative
• C. Cannot be said
• D. None

Answer 1

The correct option is B Negative

Answer is B.
When we rub cat's skin with ebonite rod, the chemical bond is formed between some parts of the the two surface. Rod has its electron more tightly bound than fur. So, cat's skin donates electrons to the rod while electrons from rod won't come out. Due to excess of electrons in rod, it becomes negatively charged while the cat's skin with lost electrons, becomes deficient of electrons. Thus, cat's skin becomes positively charged.