mod 4 Flashcards
an object or type of material that permits the flow of electric charges from one particle to another.
CONDUCTORS
materials that impede the free flow of electrons.
INSULATORS
materials that exhibit electrical behavior somewhere between that of conductors and that of insulators.
SEMICONDUCTOR
when these materials are at that one special temperature, which is called the critical temperature, they suddenly become perfect conductors, meaning that their resistance is zero.
SUPERCONDUCTORS
nothing but the components that supply and control energy.
ACTIVE COMPONENTS
Defined as the components that respond to the flow of electrical energy and can dissipate or store energy.
PASSIVE COMPONENTS
Electrical component that restricts the flow of current in the circuit.
RESISTOR
two-terminal linear passive component that is made from two conductive plates with an insulator between them. Its main function is that it stores electrical energy when an electric charge is forced onto its terminals from a power source.
CAPACITOR
Two-terminal passive electrical component. Its main function is that it stores electrical energy in the form of magnetic energy.
INDUCTOR
an electronic device, which consists of three terminals, made of semiconductor materials that controls the flow of voltage or current and acts as a switch for electronic signals.
TRANSISTOR
Electrical device that is used to break the circuit, interrupting the current and to supply the current from one conductor to another conductor.
SWITCH
Made from a semiconductor material that allows the current to flow in one direction.
DIODE/ LIGHT-EMITTING DIODE (LED)
Material or a piece of wire which is used to protect the components from destruction due to the excessive current flowing through them.
FUSE
Used to connect two or more devices, enabling the transfer of electrical signals or power from one device to the other.
ELECTRICAL WIRE/ CABLE
Passive electrical device, consists of two coils of wire linked by an iron core or also known as transformer core, that transfers electrical energy between two or more circuits.
TRANSFORMER
Electrical device that is used to convert chemical energy into electrical energy through electrochemical discharge reactions.
BATTERY
Component which converts mechanical energy into electrical energy by electromagnetic induction.
GENERATOR
Electrical generator that creates direct current using a commutator.
DYNAMO
an electrical generator that converts mechanical energy to electrical energy in the form of alternating current.
ALTERNATOR
gives the value of quantity to be measured in terms of the physical constant of the instruments and their deflection only, not measurable on a graduated scale.
ABSOLUTE INSTRUMENTS
Calibrated and directly give the value of quantity to be measured.
SECONDARY INSTRUMENTS
Fitted with a pointer which moves over a calibrated scale and indicates the electric quantity to be measure directly on the scale.
INDICATING INSTRUMENTS
Record the electrical quantity to be measured on a graph paper for a desired period.
RECORDING INSTRUMENTS
Measure the total quantity of electricity consumed in a circuit in a given time.
INTEGRATING INSTRUMENTS
