Stromstärke

Stromstärke, also known as electric current, is the flow of electric charge. It is measured in amperes (A). Imagine a river of water; the flow of water is analogous to electric current. The more water flowing per second, the higher the flow rate. Similarly, the more charge flowing through a point in a circuit per second, the higher the electric current.

The symbol for current is typically I. It is defined as the amount of charge passing through a cross-sectional area per unit of time. Mathematically, this is expressed as I = ΔQ / Δt, where ΔQ is the amount of charge and Δt is the time interval. In a conductor like a wire, this charge is carried by electrons.

In a direct current (DC) circuit, the charge flows in one direction. In an alternating current (AC) circuit, the direction of charge flow reverses periodically. Understanding stromstärke is fundamental to comprehending electrical circuits, power, and resistance. It is a crucial concept in physics and electrical engineering, allowing for the analysis and design of electrical systems.