3.1. Conductors in equilibrium3.2. Conductors with cavities, electric shielding3.3. Capacitors3.4. Mutual electric influence of conductors3.5. Electric forces between conductors3.6. Currents and current densities3.7. Classical model of conduction, Ohm’s law and the Joule effect3.8. Resistance of conductors3.9. Variation of resistivity with temperature, superconductivity3.10. Band theory of conduction, semiconductors*3.11. Electric circuits3.12. Problems