Home › Forums › density functional theory › functions and functionals › functional example This topic has 0 replies, 1 voice, and was last updated 1 year, 4 months ago by sadiasalsabil. Viewing 1 post (of 1 total) Author Posts August 15, 2023 at 9:10 pm #8765 sadiasalsabilParticipant Average Power delivered to a resistor(of Resistance R) in an AC circuit = (1/T)*integration of (instantaneous current^2 * R) over one cycle. Here, instantaneous current is the function, and average power is the functional. Author Posts Viewing 1 post (of 1 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In