•State in capacitors and inductors. Duality of state. Circuit analogs, e.g. thermal, mechanical.
• Natural time constant and step response in first- and second-order circuits.
• Digital logic with nFETs and pFETs and CMOS
• Violating the lumped-element abstraction
• Superconducting circuits
• Josephson junctions, potential-energy picture of circuit evolution
• Quantum states of a circuit