i want to know about the power in the ac circuits. i have got this one question which has been bugging me for quite some time :unsure: .if the source (as in domestic transformers) actually supplies a power(apparent) , only a fraction of which is actually available to the load(the real power), what actually happens to the remaining power supplied by the source (apparent power - real power). i am pretty sure that this value cannot be equal to the reactive power. i will be really grateful if someone could clear my doubt.