What is called electrostatics ?
Discuss the types of electric charges by rubbing appropriate non-conductors. Which scientists gave their names ?
What type of charges are obtained on silk cloth and glass rod ?
Can you neglect the quantization of charge ?
A small sphere of radius $r_{1}$ and charge $q_{1}$ is enclosed by a spherical shell of radius $r_{2}$ and charge $q_{2} .$ Show that if $q_{1}$ is positive, charge will necessarily flow from the sphere to the shell (when the two are connected by a wire) no matter what the charge $q_{2}$ on the shell is.
What is called quantization of electric charge ? Write $SI$ unit of electric charge.