Electricity

Question 1

two cells + is also known as

Answer 1

a battery

Question 2

voltage

Answer 2

potential difference in energy between two points (push in a current)

Question 3

currant

Answer 3

how many electrons are flowing through the circuit

Question 4

ohm

Answer 4

measurement of resistance between two points of a conductor when a constant potential difference of one volt (V) is applied to those points and a current of one ampere (A) is produced

Question 5

resistance

Answer 5

Resistance is a measure of the opposition to current flow in an electrical circuit. Resistance is measured in ohms, symbolized by the Greek letter omega (Ω).

Question 6

Ohm law

Answer 6

R= voltage/current

Question 7

current x resistance =

Answer 7

voltage

Question 8

other description for Voltage

Answer 8

potential difference

Question 9

Meter

Answer 9

Records amount of energy supplied to your home

Question 10

Service panel

Answer 10

Holds the circuit breakers

Question 11

circuit breaker

Answer 11

individual switches for breaking an overloaded circuit

Question 12

fuse

Answer 12

burns out and breaks circuit if unsafe

Question 13

branch circuit

Answer 13

wiring that leads from service panel to home appliances

Question 14

step up transformer

Answer 14

primary coils have less turns than secondary. voltage increases

Question 15

step down transformer

Answer 15

primary coil has more turns than than secondary. voltage goes down

Question 16

transformer formula

Answer 16

120/25 –> 480/100

Question 17

kilowatt-hour is a measure of…

Answer 17

energy

Question 18

power fomula

Answer 18

P= e/t

Question 19

energy formula

Answer 19

e= pt

Question 20

time formula

Answer 20

t= e/p

Question 21

formula for kw hours

Answer 21

kw x hours

Question 22

power unit

Answer 22

watts (W)

Question 23

energy unit

Answer 23

Joules (J)

Question 24

Time unit

Answer 24

Seconds (S)

Question 25

Law of energy

Answer 25

cannot be created/destroyed

Question 26

types of energy

Answer 26

chemical mechanical nuclear heat solar electrical

Question 27

how to convert elec to heat

Answer 27

moving charges meeting resistance of a metal conductor

Question 28

heat to elec

Answer 28

thermoelectric

Question 29

how does thermocouple work

Answer 29

heat wants to spread to cold and 2 metals are placed between the two junctions. energy will flow

Question 30

other name for thermoelectric effect

Answer 30

seebeck effect

Question 31

define energy

Answer 31

the ability to do work

Question 32

2+ thermocouples in series

Answer 32

thermopile

Question 33

what generates current in a thermoelectric generator

Answer 33

the flow of heat

Question 34

elec to motion

Answer 34

motor

Question 35

motion to elec

Answer 35

generator

Question 36

solar cell

Answer 36

photovoltaic

Question 37

elec to light

Answer 37

bulb runs current through a resistorl

Question 38

light to elec

Answer 38

solar panels

Question 39

which has more chemicals d or aa

Answer 39

d

Question 40

negative electrode

Answer 40

anode

Question 41

bar spinning between magnet name

Answer 41

armature

Question 42

commutator split name

Answer 42

split ring commutator

Question 43

brush function

Answer 43

closes loop in split ring commutator

Question 44

synonym for DC generator

Answer 44

dynamo

Question 45

what happens when theres relative motion between conductor and magnet

Answer 45

current is generated

Question 46

whats an electro magnet and its cool feature

Answer 46

made of soft iron core wound by a wire. it can turn off.

Question 47

how to make electromagnet stronger

Answer 47

more wraps of wire, stronger core

Question 48

controlled variable

Answer 48

stays the same

Question 49

manipulated variable

Answer 49

is altered in each test

Question 50

dependant variable

Answer 50

reacts to the manipulated variable