electrical principles

Question 1

volts

Answer 1

force that allows electrons to flow

Question 2

amps

Answer 2

amount of electrons in a circuit

Question 3

direct current

Answer 3

one direction

Question 4

DC power calculation

Answer 4

P= I V

Question 5

decibals

Answer 5

used when dealing with power ratios

Question 6

potentiometer

Answer 6

component used as an adjustable volume control

Question 7

capacitor

Answer 7

electrical component, stores energy in an electiric field

Question 8

farad

Answer 8

basic unit of capacitance

Question 9

inductor

Answer 9

stores energy in a magnetic field, henry is unit

Question 10

switch

Answer 10

connect or disconnect electrical circuits

Question 11

fuse

Answer 11

protects other circuit components from current overloads

Question 12

nonrechargeable batteries

Answer 12

carbon zincc

Question 13

rechargeable batteries

Answer 13

nickel metal hydride
lithium ion
lead acid gel cell

Question 14

diode

Answer 14

component that allows current to flow in only one direction

Question 15

anode and cathode

Answer 15

names of the two electrodes of a diode

Question 16

how to identify a diodes cathode

Answer 16

has a stripe

Question 17

light emitting diode LED

Answer 17

when current flows through, they emit visible light

Question 18

transistor

Answer 18

electronic components capable of using a voltage or current signal to control current flow

can be a switch or an amplifier emphasis on amplifier

Question 19

gain

Answer 19

term that describes a transistors ability to amplify signals

Question 20

what is a transistor made of

Answer 20

three layers of semiconductor material

Question 21

electrodes of a pnp or npn transistor

Answer 21

emitter, base, collector

Question 22

field effect transistor

Answer 22

type of transistor, source, gate, and drain

Question 23

schematic symbols

Answer 23

name for standardized representations of components in an electrical wiring didagram

Question 24

what does a transistor look like on a diagram

Answer 24

idk man you just gotta know lol i cant post pictures

uh its a circle with a arrow that is angled

Question 25

what does a lamp look like

Answer 25

kinda like a fingernail

Question 26

single pole single throw switch

Answer 26

basically just a switch

Question 27

what does a transformer look like on a diagram

Answer 27

two parallel lines

Question 28

rectifier

Answer 28

changes an alternating current into a varying direct current signal

looks like the play button for music

Question 29

what does an LED look like

Answer 29

like a rectifier (play sybol) with zagging arrows next to it

Question 30

what does a variable inductor look like

Answer 30

bunch of u’s attacched together

Question 31

what does an inductor and capacitor connected in series or parallel form

Answer 31

a filter, it is a simple resonant or tuned circuit

Question 32

relay

Answer 32

switch conntrolled by an electromagnet

Question 33

meter

Answer 33

devie used to indicate many different levels, ex used to display signal strength on a numberic scale

Question 34

integrated circuit

Answer 34

device that combines several semiconductors and other components into one package

Question 35

integrated circuit

Answer 35

name of a device that combines several semiconductors and other components into one package

Question 36

regulator

Answer 36

type of circuit that controls the amount of voltage from a power supply

Question 37

why do we use shielded wire

Answer 37

prevent coupling of unwanted signals to or from the wire