Introduction to Capacitance, Electric Current, and Circuit Devices

Understanding how electrical charge moves and stores energy is the foundation of modern technology. This text-only course guides you through the core principles of electrical circuits, helping you build a solid intuitive and mathematical grasp of physical electronics. You will start with the absolute basics of electric potential and charge storage, ensuring a strong conceptual foundation before moving on to practical circuit analysis. By the end of this course, you will confidently analyze resistor-capacitor networks and understand how standard laboratory instruments function to measure electrical properties. What you'll learn: Understand the physical concepts of capacitance, electric potential, and energy storage in electric fields; Calculate equivalent capacitance for series and parallel capacitor combinations; Analyze electric current, drift velocity, and the factors determining resistance and resistivity; Apply Ohm's law and Kirchhoff's laws to solve basic direct-current circuit problems; Explain the internal working principles of electrical devices like galvanometers, ammeters, and voltmeters. The course begins with essential terminology and the physics of electrostatic fields, transitions into current flow and resistance, and concludes with a detailed look at practical measurement devices. This course is designed specifically for beginners, requiring only basic high-school algebra and a curiosity about how electricity works. Start reading today to demystify the core components of electrical engineering.