I was having heated discussion with one of my friends. We were discussing Earth Hour and its role in saving electricity, and creating awareness.
He stated that even if you turn off the lights, the load from the transmission lines is there at you home, so power is still being consumed.
But then I replied that, Power P $= I^2R$. and since there is no current flowing in the household equipments( whose R is much higher than that of the transmission lines), so there is no(or negligible) power loss.
Please tell which logic is correct, and whether switching off the unused electric/electronic equipments helps to save power or not?