Explore the fundamental concept of electric fields in this 43-minute physics lecture. Delve into the underlying cause of electric forces, beginning with an introduction to fields and a compelling electric field demonstration. Learn about the force on a probe charge and the electric field of a point charge. Visualize these concepts through electric field diagrams. Apply your knowledge to solve two practical examples, reinforcing your understanding. Conclude the session by tackling end-of-lecture questions to solidify your grasp of this crucial physics topic.