Number of electrons in one coulomb of charge will be
$5.46 \times {10^{29}}$
$6.25 \times {10^{18}}$
$1.6 \times {10^{ + 19}}$
$9 \times {10^{11}}$
What is point charge ?
Two objects are rubbed against each other, the nature of electric force, when they are placed at some distance is
Give difference between charge and mass.
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
Which scientist represented the types of charges ?