CBSE Class 12-science Answered

1.) Gauss's law (in electrostatics),

2.)Gauss's law for magnetism,

3.)Gauss's law for gravity.
 In fluid dynamics, electromagnetism, quantum mechanics, and a number of other fields, there are continuity equations that describe the conservation of mass, momentum, energy, probability, or other quantities. . The divergence theorem states that any such continuity equation can be written in a differential form (in terms of a divergence) and an integral form (in terms of a flux).