Review of Energy in Circuits
There is energy stored in a capacitor (that has Electric Field): Estored = (1/2)CV2 .
Recall that V is related to E (Electric Field).
There is energy stored in an inductor (that has Magnetic Field): Estored = (1/2)LI2 .
Recall the I is related to B (Magnetic Field).
There is power dissipated (as heat) in a resistor: Plost = RI2 .