This lecture covers the time-dependence of energy stored in an LC circuit, the impact of damping on the circuit's differential equation and solution, and the oscillations between electric and magnetic energy. It also explores the Kirchhoff's voltage law and differential equations in RLC circuits, the solution for damped harmonic oscillator equations, and the addition of displacement current in Ampère's law. The lecture concludes with a discussion on Maxwell's equations, including the missing term 'displacement current' and its implications in electromagnetic waves.