What type of charges are obtained on silk cloth and glass rod ?
Who represented the quantization of electric charge first and on what basis ?
What is point charge ?
Mention the $SI$ unit and value of fundamental charge. Write its smaller units.
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 ?
Five balls numbered $1$ to $5$ are suspended using separate threads. Pairs $(1, 2)$, $(2, 4)$ and $(4, 1)$ show electrostatic attraction, while pair $(2, 3)$ and $(4, 5)$ show repulsion. Therefore ball $1$ must be