List of top Physics Questions on Coulomb’s Law asked in CUET (UG)

A charge q is placed at the center of a line joining two equal positive charges Q. The system of the three charges will be in equilibrium, if q is equal to

An electron is found to repel another electron at a distance of \(1\,\text{cm}\) with a force \(F=2.3\times10^{-24}\,\text{N}\). Two protons placed at a distance of \(5\,\text{cm}\) will

Two small insulating spheres are rubbed against each other and placed \(1\,\text{cm}\) apart. If they attract each other with a force \(F=0.1\,\text{N}\), the number of electrons that were transferred from one sphere to another during rubbing are nearly

Two point charges placed a distance d apart in vacuum exert a force of magnitude F on each other. One of the two charges is doubled. To keep the magnitude of force same the separation between the charges should be changed to