Question

A plastic comb is rubbed with dry hair whereas a glass rod is rubbed with a piece of silk cloth. Which of these will get negatively charged? 

A) Plastic comb 

B) Glass rod 

C) Dry hair 

D) Silk cloth 

A. A and B 

B. B and C 

C. A and D 

D. B and D

Answer 1

C. A and D 

After rubbing the glass rod with silk cloth, the glass rod becomes positively charged. The silk cloth becomes negatively charged. When a plastic comb is dry hair, it becomes negatively charged. The negatively charged comb induces a positive charge on the pieces of paper which are neutral in nature.