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In general, circuits in which charge flows in one direction are direct current (DC) circuits. In alternating current (AC) circuits (such as those in your house) the current direction continually reverses direction. Despite this difference, many of the concepts addressed in this chapter apply to both DC and AC circuits. Batteries
DIRECT CURRENT. LEARNING OBJECTIVES. Upon completing this chapter, you will be able to: Identify the term schematic diagram and identify the components in a circuit from a simple schematic diagram. State the equation for Ohm’s law and describe the effects on current caused by changes in a circuit.
Direct-Current Circuits. 7.1 Introduction. Electrical circuits connect power supplies to loads such as resistors, motors, heaters, or lamps. The connection between the supply and the load is made by soldering with wires that are often called leads, or with many kinds of connectors and terminals.
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
Lecture 9: Direct current circuits (ch.26) From ch.25 •how to do calculations involving energy and power in circuits. Looking forward at … •how to analyze circuits with multiple resistors in series or parallel. •rules that you can apply to any circuit with more than one loop. •Example problems (see the PDF files)
the current, which flows through the wires of the circuit from the positive side of the battery to the negative side (by the earlier definition) is known as a direct current, or DC current. a current that alternates in direction is known as an alternating current, or AC current; most household circuits around the world provide AC current.
Positive current flow is useful for most of the circuit analysis in this chapter, but in metallic wires and resistors, electrons contribute the most to current, flowing in the opposite direction of positive current flow.
