mod 4

Question 1

an object or type of material that permits the flow of electric charges from one particle to another.

Answer 1

CONDUCTORS

Question 2

materials that impede the free flow of electrons.

Answer 2

INSULATORS

Question 3

materials that exhibit electrical behavior somewhere between that of conductors and that of insulators.

Answer 3

SEMICONDUCTOR

Question 4

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.

Answer 4

SUPERCONDUCTORS

Question 5

nothing but the components that supply and control energy.

Answer 5

ACTIVE COMPONENTS

Question 6

Defined as the components that respond to the flow of electrical energy and can dissipate or store energy.

Answer 6

PASSIVE COMPONENTS

Question 7

Electrical component that restricts the flow of current in the circuit.

Answer 7

RESISTOR

Question 8

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.

Answer 8

CAPACITOR

Question 9

Two-terminal passive electrical component. Its main function is that it stores electrical energy in the form of magnetic energy.

Answer 9

INDUCTOR

Question 10

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.

Answer 10

TRANSISTOR

Question 11

Electrical device that is used to break the circuit, interrupting the current and to supply the current from one conductor to another conductor.

Answer 11

SWITCH

Question 12

Made from a semiconductor material that allows the current to flow in one direction.

Answer 12

DIODE/ LIGHT-EMITTING DIODE (LED)

Question 13

Material or a piece of wire which is used to protect the components from destruction due to the excessive current flowing through them.

Answer 13

FUSE

Question 14

Used to connect two or more devices, enabling the transfer of electrical signals or power from one device to the other.

Answer 14

ELECTRICAL WIRE/ CABLE

Question 15

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.

Answer 15

TRANSFORMER

Question 16

Electrical device that is used to convert chemical energy into electrical energy through electrochemical discharge reactions.

Answer 16

BATTERY

Question 17

Component which converts mechanical energy into electrical energy by electromagnetic induction.

Answer 17

GENERATOR

Question 18

Electrical generator that creates direct current using a commutator.

Answer 18

DYNAMO

Question 19

an electrical generator that converts mechanical energy to electrical energy in the form of alternating current.

Answer 19

ALTERNATOR

Question 19

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.

Answer 19

ABSOLUTE INSTRUMENTS

Question 20

Calibrated and directly give the value of quantity to be measured.

Answer 20

SECONDARY INSTRUMENTS

Question 21

Fitted with a pointer which moves over a calibrated scale and indicates the electric quantity to be measure directly on the scale.

Answer 21

INDICATING INSTRUMENTS

Question 22

Record the electrical quantity to be measured on a graph paper for a desired period.

Answer 22

RECORDING INSTRUMENTS

Question 23

Measure the total quantity of electricity consumed in a circuit in a given time.

Answer 23

INTEGRATING INSTRUMENTS

Question 24

measures electric current.

Answer 24

AMMETERS

Question 25

measure the potential difference or voltage of a circuit.

Answer 25

VOLTMETERS

Question 26

Instrument to determine resistance.

Answer 26

OHMMETERS

Question 27

Single instrument capable of measuring voltage, resistance, and current.

Answer 27

MULTIMETERS

Question 28

Measure electrical quantities of current and voltage that change in amplitude and direction periodically with time.

Answer 28

ALTERNATING CURRENT METERS

Question 29

Instrument that measures dc power or real ac power.

Answer 29

WATTMETER