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A simple DC generator consists of an armature coil with a single turn of wire. The armature coil cuts across the magnetic field to produce a voltage output. As long as a complete path is present, current will flow through the circuit in the direction shown by the arrows in Figure 2. In this
This text focuses on the analysis of DC (direct current) electrical circuits. It assumes no prior knowledge of electrical quantities, systems or circuit theory. As with any new endeavor, it is important to define the terminology and tools to be used at the outset.
The direction of current is the direction positive charges flow, a definition adopted by Benjamin Franklin before it was determined that in most cases the charges that flow in a circuit are electrons (negative charges).
Chapter 1 Basic Concepts Of Electricity. Conventional Versus Electron Flow. PDF Version. “The nice thing about standards is that there are so many of them to choose from.” —Andrew S. Tanenbaum, computer science professor. Positive and Negative Electron Charge.
The handbook includes information on alternating current (AC) and direct current (DC) theory, circuits, motors, and generators; AC power and reactive components; batteries; AC and DC voltage regulators; transformers; and electrical test instruments and measuring devices.
12 Σεπ 2021 · Electrons move from a lower potential to a higher potential. We call this model electron flow. For most work, engineers and technicians use conventional flow, although in some cases, such as the explanation of semiconductors, electron flow is easier to visualize for some people.
When a DC voltage is present between two terminals and a wire or resistive element is connected to the terminals, DC current will flow. The most common resistive element is the resistor; we’ll learn more about this component in the next page. An incandescent light bulb is also a resistive element.
