Acids such as HCl (hydrochloric acid) and H2SO4 (sulfuric acid) dissociate (separate into ions in water) completely
in solution. The ion that acids have in common and that
accounts for their properties is

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.

Amagnetic field "does not" interact with stationary electric charges. so, a.hope my answer you : )