Circuits with emf and resistors

This lecture covers Chapter 3 on circuits with electromotive force (emf) and resistors, discussing topics such as Kirchhoff's laws, analysis of circuits based on resistors, internal resistance of emf, network analysis, and current calculations in multi-loop circuits. The instructor explains the definition of currents from moving charges, Ohm's law, Drude model, and the continuity equation of charge currents. Practical examples include determining current values in circuits with ideal EMFs and calculating resistance in lightbulbs. Additionally, the lecture explores the relationship between temperature and resistance in tungsten wires.