And a joule of energy is one colomb of charge dropping one volt in potential.
P = V x I = E x f
We also need to understand a little about capacitance. A capacitor stores energy. The wiring capacitance for a pair of conductors, surrounded by silicon dioxide (permitivity 4), is Pi * e_0 * e_r in Farads per metre, which is roughly 100 pF/m. This applies fairly well for VLSI nets where the units of 0.1 pF/mm or 0.1 fF/um are more useful.
| 2: (C) 2012-18, DJ Greaves, University of Cambridge, Computer Laboratory. |