Question

A cat's skin acquires _______ charge when rubbed with ebonite rod.

• A. negative
  
• B. positive
• C. zero
  
• D. can not say
  

Answer 1

The correct option is B positive

A cat's skin acquires positive charge when rubbed with ebonite rod.
The cat's skin can be considered as fur.
When we rub fur 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, fur 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 fur with lost electrons becomes deficient of electrons. Thus, fur becomes positively charged.