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