Electronics/Expanded Edition DC circuits
Resistance
Ohm's law, resistivity and conductivity
Capacitance
Some formulae for capacitance of different shapes, dependence on dielectric constant, units
Batteries
Behaviour in circuits
Solving circuits
Kirchoff's laws, Thévenin's theorem
Hall effect, Piezoelectricity, etc
Voltages induced by magnetic fields, stress, temperature difference, etc.