When the distance between the charged particles is halved, the force between them becomes
One-fourth
Half
Double
Four times
Out of gravitational, electromagnetic, Vander Waals, electrostatic and nuclear forces; which two are able to provide an attractive force between two neutrons
Three point charges are placed at the corners of an equilateral triangle. Assuming only electrostatic forces are acting
A charge of $Q$ coulomb is placed on a solid piece of metal of irregular shape. The charge will distribute itself
Two charges $ + 4e$ and $ + e$ are at a distance $x$ apart. At what distance, a charge $q$ must be placed from charge $ + e$ so that it is in equilibrium
Similar charges are placed at corners of a square and a charge $q_0$ is placed at it's centre find net force on it