Chapter 11

Question 1

what is a device producing static electricity

Answer 1

electrostatic generator

Question 2

what is the most common electrostatic generator used today

Answer 2

van de graff

Question 3

where does an electric charge always move to on a conductor

Answer 3

the outside

Question 4

will the interior of a car be safe in a lightning strike? why or why not?

Answer 4

yes, because the electric charge would be fined to the exterior of the car

Question 5

what occurs due to a massive buildup of negative charge in the atmosphere and positive charge on the ground

Answer 5

lightning

Question 6

device invented by Benjamin Franklin to protect buildings from lightning

Answer 6

lightning rod

Question 7

natural electrostatic phenomenon referred to as a corona discharge

Answer 7

St. Elmo’s fire

Question 8

who is credited with inventing the first capacitor

Answer 8

Musschenbroek

Question 9

name of the device that musschenbroke invented to store static charge

Answer 9

leyden jar

Question 9

Leyden jar was an early form of a what

Answer 9

capacitor

Question 10

how was the Leyden jar able to store charge

Answer 10

foil on the interior, glass, and foil on the exterior so the charge can store itself on the interior foil

Question 11

the first electric light suitable for household use

Answer 11

incandescnet light

Question 12

how does the incandescent lamp produce light

Answer 12

there is a vacuum and the energy goes through a wire which produces joule heat

Question 13

the thin wire in an incandescent lamp

Answer 13

filament

Question 14

which lamp produces light by passing an electric current thru a long tube filled with a low pressure mix of mercury vapor and argon

Answer 14

fluorescent

Question 15

does the electric arc produced by an electric lamp produce visible light

Answer 15

no, it instead produces uv light

Question 16

if the fluorescent lamp does not produce visible light from the electricity, how does it produce visible light

Answer 16

the phosphor on the interior of the tube makes a phosphorescent light

Question 17

what type of lamp became a smaller version of the fluorescent lamp

Answer 17

CFL

Question 18

which type of lamp is an electric discharge lamp tied with neon gas

Answer 18

neon lamp

Question 19

what type of lamp is a semi conductor that uses small amounts of direct current to produce light

Answer 19

LED

Question 20

what is a simple device that converts electricity to back and forth motion

Answer 20

solenoid

Question 21

what is essentially an electromagnetic switch used for comms

Answer 21

telegraph

Question 22

who invented the telegraph

Answer 22

Samuel morse

Question 23

electromagnetic switch

Answer 23

relay

Question 24

device converting pulses of electricity into sound

Answer 24

loudspeaker

Question 25

device that uses electricity to create motion

Answer 25

motor

Question 26

what is the permanent magnet used to create a stationary magnetic field in a motor

Answer 26

stationary magnet/field magnet

Question 27

part of the motor that spins

Answer 27

armature

Question 28

why is the armature capable of spinning continually when you have magnetic poles

Answer 28

the poles keep switching

Question 29

what is an electrochemical cell used to produce electricity

Answer 29

voltaic cell

Question 29

which specific type of voltaic cell is capable of being recharged

Answer 29

storage cell

Question 30

which terminal in a battery is the negative terminal

Answer 30

anode

Question 31

which electrode delivers electrons to the circuit

Answer 31

anode

Question 32

positive terminal of a battery

Answer 32

cathode

Question 33

which arrangement of batteries allows us to increase the voltage

Answer 33

series arrangement

Question 34

yes or no - if I have batteries arranged in series, does the current increase

Answer 34

no

Question 35

if I have 3 batteries, they are 1 volt a piece, and they deliver a current of 0.5 Amperes - if they are arranged in parallel, what will be the current

Answer 35

1.5 Amperes

Question 36

in general, when I arrange batteries in parallel, what will increase

Answer 36

current

Question 37

ability of magnetism to convert mechanical motion into electricity

Answer 37

electromagnetic induction

Question 38

which scientist is credited with discovering electromagnetic induction

Answer 38

faraday

Question 39

name the ways that electromagnetic induction can be increased

Answer 39

1. moving magnet faster 2. creating more coils 3. increasing the magnet's strength

Question 40

device that uses electromagnetic induction to produce electricity

Answer 40

generator

Question 41

in order for a generator to produce electricity, the armature must cut through what

Answer 41

the lines of flux

Question 42

AC vs DC motor or generator, which device uses a commutator

Answer 42

DC

Question 43

what type of generator has no moving parts

Answer 43

MHD generator

Question 44

what was the primary reason why an MHD generator is not feasible

Answer 44

the fluid being used must be moved at very high speeds

Question 45

which type of alternative form of energy converts sunlight into energy

Answer 45

solar energy/ photovoltaic cells

Question 46

which type of alt. form of energy requires the splitting apart of atomic material

Answer 46

nuclear fission

Question 47

which power generation uses reservoir or backed up water

Answer 47

hydroelectric

Question 48

device that increases or decreases the voltage uses electromagnetic induction

Answer 48

transformer

Question 49

in most cases of power generation, it occurs because something is moving a turbine. what is the primary material moving those turbines

Answer 49

water

Question 50

thinking about generators, how can I increase the amount of electricity that a generator produces (3 ways)

Answer 50

1. increase the number of turns 2. increase speed of rotation 3.increase strength of the magnetic field

Question 50

what device is in a AC generator that is not in a DC generator

Answer 50

slip rings

Question 51

several voltaic cells connected ins Eries to each other

Answer 51

batteries

Question 52

why is a slip ring necessary in an Ac generator but not in a dc generator

Answer 52

in an Ac generator, it has an alternating current and its automatically rotating. Slip rings stop the wires from twisting around the armature

Question 53

series of long and short taps used to communicate

Answer 53

morse code

Question 54

which type of lamp is the most energy efficient

Answer 54

LED

Question 55

if an electric vehicle is running on batteries, what current will it be running on?

Answer 55

direct current

Question 56

if you add multiple batteries, will the DC increase

Answer 56

yes

Question 57

how do you increase an AC power

Answer 57

turn the generator more

Question 58

where does AC come from most commonly

Answer 58

outlets