Why spark is seen while removal of synthetic clothes in dark in winter ?

A proton and a deuteron are initially at rest and are accelerated through the same potential difference. Which of the following is false concerning the final properties of the two particles ?

Give examples of non-conductors and conductors.

Write unit and value of fundamental electric charge.

How can you charge a metal sphere positively without touching it?

Discuss the types of electric charges by rubbing appropriate non-conductors. Which scientists gave their names ?