A soap bubble is given a negative charge, then its radius
Decreases
Increases
Remains unchanged
Nothing can be predicted as information is insufficient
Write definition of unit Coulomb.
Select the correct statement about electric charge
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
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 ?
Find change in mass of a body if it is given $+2C$ charge.