The existence of a negative charge on a body implies that it has :
An electron is moving around a nucleus of a hydrogen atom in a circular orbit of radius r. The F ⃗ coulomb's force between the two is :
The force between the electrons separated by a distance r varies as:
Three charges are placed at the vertices of an equilateral triangle of side a. The force experienced by the charge placed at vertex A in direction normal to BC is :
The dielectric constant of metals is :
The law of force that governs the force between two electric charges was discovered by :
Two point charges separated by a distance d repel each other with a force of 9 N. If the separation between them becomes 3d, the force of repulsion will be:
Electrons remain bound to the nucleus due to which of the following forces :
