Current Notes

Question 1

Electricity is the flow of tiny particles called__

Answer 1

Electrons

Question 2

Electrons are part of ___

Answer 2

Atoms

Question 3

The word circuit means “___”, therefore a circuit is a ___ around with electricity (or water) flows

Answer 3

1. Go around
   2.closed path

Question 4

Electrons flowing through a wire can be compared to __ flowing through a hose. Once the flow of electrons or water is going, ___, is performed

Answer 4

1.Water
2.work

Question 5

You would get shocked in a bumper car by touching the ___and the ___at the same time. This means that you are completing the ___ allowing electricity to flow

Answer 5

1.Flour
2.cealing
3.circuit

Question 6

Electricity from a wall outlet has enough energy to stop your ___

Answer 6

Heart

Question 7

Electricity is the ___ of electrons, because electrons ___ from atom to atom

Answer 7

1.Flow
2.jump

Question 8

Materials that allow electrons to
Move easily from atom to atom are called ___

Answer 8

Conductor

Question 9

Materials that do not allow electrons to flow easily are called ___

Answer 9

Insulator

Question 10

Materials that are somewhere in between

Answer 10

Resistors

Question 11

the force or pressure of electricity and is compared to the amount of water pressure in a hose

Answer 11

Voltage

Question 12

The amount of electricity and is compared to the amount of water in a hose

Answer 12

Amps

Question 13

term used for work performed by electricity

Answer 13

Power

Question 14

Hair sticking up has a ___ charge. Why? It is missing ___

Answer 14

1.Positive
2.electrons

Question 15

What is the shock felt caused by?

Answer 15

Flow of electrons

Question 16

What did we use before electricity?___

Answer 16

Steam power

Question 17

What type of energy does a battery have?

Answer 17

Potential.

Question 18

Electricity must have a ___. If it is just sitting there its considered___

Answer 18

1.Loop
2.static

Question 19

Atoms which can pass electrons are called ___

Answer 19

Conductor

Question 20

Atoms that do not have free electrons are called ___

Answer 20

Insulators

Question 21

With current applied the free electrons, with copper atoms, will move in ___ direction between other atoms.

Answer 21

Same

Question 22

Circuits

Answer 22

Route electrons can flow easily

Question 23

Voltage=

Answer 23

a pushing force of electrons within a circuit

Question 24

More voltage=

Answer 24

More electrons

Question 25

ELectrons can flow if circuit is ___, when circuit is ___, no electrons can flow

Answer 25

1.Closed 2.Flow

Question 26

Resistance-

Answer 26

A restriction to the flow of electrons which is measured in ohms

Question 27

Longer the wire=____, Thicker the wire =___

Answer 27

Greater resistance Lower resistnance

Question 28

Resisters-

Answer 28

Restrict the flow of electrons

Question 29

Low collision rate=

Answer 29

copper

Question 30

High Collision rate

Answer 30

Iron

Question 31

How do we increase the strength of magnetic fields

Answer 31

Increase current Increase current turns

Question 32

Passing magnetic field through a coil will induce a ___ and ___ to flow

Answer 32

Voltage Current

Question 33

Induce the voltage into second coil when alternatiing current is used

Answer 33

Transformers

Question 34

How do you increase or decrease the voltage between the primary and secondary coils

Answer 34

Change the amount of coils on either side

Question 35

What does a capacitor store

Answer 35

Stores an electronic charge

Question 36

Where can you normally find capacitors

Answer 36

In circuit boards

Question 37

Types of electricity

Answer 37

Types of electricity

Question 38

Alternating Current (AC)

Answer 38

Current that moves back and forth with a changing magnetic field *Most common type*

Question 39

Where can you find it?

Answer 39

Wall sockets

Question 40

Direct Current (DC)

Answer 40

Is a current that travels in one direction

Question 41

Where can it be found

Answer 41

Batteries and hand held devices.