NCATT Basic Circuits Theory of Operation - Level B Flashcards
Define Power
Power—Product of applied voltage and current power in a DC circuit. Product of applied voltage and the current in phase with the voltage in an AC circuit.
Define Joules
Joules—International measure of energy expended in the kilogram, meter, and second system of units. Also known as a Newton-meter, a Joules is the amount of work done when a force of one newton moves an object one meter along the direction of the force.
Define Series Circuit
Series Circuits—Contains only one path for current, making current common through all components. Series circuit components are connected end-to-end.
Define Parallel Circuit
Parallel Circuits—Contains more than one path for current. Circuit components are connected directly across each other. Current is divided between each branch in the circuit.
Define Complex Circuits
Complex Circuits—Contains a combination of series and parallel circuits.
Define Voltage Drop
Voltage Drop—Reduction in voltage caused by current flowing through a resistor. Voltage drop is called an IR (Current x Resistance) drop.
What is the effect of Resistors in Series Circuits?
Causes a reduction of current in one circuit.
What is the effect of Resistors in Parallel Circuits?
Causes a reduction of current in multiple circuits.
Define Kirchoff’s Current Law (KCL)
Kirchhoff’s Current Law (KCL)—Kirchhoff’s Current Law states that “the algebraic sum of the current flowing away from any point in an electrical circuit is equal to the sum of the current flowing to that point.”
Define Kirchoff’s Voltage Law (KVL)
Kirchhoff’s Voltage Law (KVL)—Kirchhoff’s Voltage Law states that “the algebraic sum of all of the voltage drops in any closed circuit is equal to zero.”
Define Kirchoff’s Resistance Law (KRL)
Kirchhoff’s Resistance Law (KRL))—Kirchhoff’s Resistance Law states that “the total resistance in a series circuit is the sum of the individual resistances or loads in the circuit.”
Define Bridge Circuits
Bridge Circuits—Contains four impedances that form a square. Two diagonally opposite corners are connected to an input device. The other two diagonally opposite corners are connected to an output device.