Electric Current: Definitions and Concepts

This lecture covers the discussion on the force acting on a dielectric in a capacitor, electric current, and electrical resistance. It explains the concept of electric current as the net charge passing through a surface in a unit of time, and introduces the conditions for the flow of electric current. The lecture also delves into the definition of current as the rate of change of charge with respect to time, measured in amperes. Furthermore, it explores the conditions required for the flow of electric current, including the presence of charge carriers and the establishment of an electric field. The instructor presents examples and theoretical explanations to illustrate these fundamental concepts.