This lecture covers topics such as induction, self-inductance, mutual inductance, Maxwell's equations, magnetic materials, magnetic field in materials, relative permeability, magnetisation, magnetic field strength, electromagnet, magnetic screening, and microscopic picture of magnetism. It also discusses the magnetic response of different types of materials, including diamagnetic, paramagnetic, ferromagnetic, antiferromagnetic, and ferrimagnetic materials, as well as the technical considerations related to hysteresis cycles in ferromagnets.