Today I learned about three important electrical concepts: voltage, current, and resistance. Voltage is the electrical pressure that pushes current through a circuit. Current is the flow of electric charge, while resistance controls or limits the flow of current. I also learned about different types of switches, such as one-way, two-way, push-button, and selector switches. Each switch has a different purpose and is used to control electrical circuits in different ways. This lesson helped me understand the basic working of electrical circuits and switches better.