Is there any needs of reactive power in electrical system?

The answer is yes! There is needs of reactive power in electrical system. In fact, without reactive power the present electrical system will not work at all.

It is said that active power in the electrical system is do things and reactive power is a waste and need to be controlled/ rectified. Nevertheless, the reactive power is needed for a crucial purpose-

Reactive power is needed to generate magnetizing force! Transformers, induction motors etc. runs through magnetic flux or field!

Active power converts to mechanical energy, light energy, thermal energy. On the other hand, reactive power converts to develop magnetic fields.

And we know that, the necessary parts of electrical system is power transformer, distribution transformer, induction motor and many more electrical equipment that works on the basis of usage of magnetic force.

The reactive power is used to generate the flow necessary for the conversion of powers through the electric or magnetic field and it is index of the transfer of energy between supply and load. Without this, there could be no net transfer of power.