Αποτελέσματα Αναζήτησης
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).
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
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. 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.
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.
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.
Electric Current • We define the electric current as the movement of charge, across a given area, per unit time: I = Δq / Δt • SI unit of current: 1 C/s = 1 Ampere (Amp) • The direction of the current is the direction in which positive charges would move. • Electrons move opposite to the direction of the current.
