Astar begins its formation as gravitational forces cause instability within a

A star begins its formation as gravitational forces cause instability within a molecular cloud. This is caused by compression in the clouds, due to radiations emitted by the bigger stars. The molecular clouds are dense regions of gas and dust. The temperature inside is very cold, which allows atoms to fuse together and leads to the formation of the stars. 

stands for electromotive force and it is measured in volts. despite its name, it is not actually the force in the sense of being a "pushing" or "pulling" (not measured in newtons).an equation that relates emf,  ℰ,  to a battery's terminal voltage, v, current, i, and internal resistance, r, is    ℰ = v + irin this case, the emf can be interpreted as a voltage—a difference in electric potential.i would not say that it would be considered an energy. if emf can be defined as the energy/work per a unit charge from a battery or other electric source, then it is not strictly energy.