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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).
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.
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
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.
Basic Direct Current (DC) Theory – E03-001 1 DC SOURCES When most people think of DC, they usually think of batteries. In addition to batteries, however, there are other devices that produce DC which are frequently used in modern technology. 1.1 LIST the four ways to produce a DC voltage. 1.2 STATE the purpose of a rectifier.
Kirchhoff’s first rule, also known as the junction rule, applies to the charge to a junction. Current is the flow of charge; thus, whatever charge flows into the junction must flow out. Kirchhoff’s second rule, also known as the loop rule, states that the voltage drop around a loop is zero.
Kirchhoff’s Rules. Junction: point where three or more conductors meet (nodes, branch points). Loop: closed conducting path. Kirchhoff’s junction rule: the algebraic sum of the currents into any junction is zero.
