Studied by 12 people

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1

Protons

**Positive** electric charge

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2

Electrons

**Negative** electric charge

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3

Neutrons

**No** electrical charge

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4

electrically neutral atom

number of protons = number of electrons (neither attract nor repel)

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5

static charge

an unbalanced negative **or** positive electric charge on an object

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6

Electic force

A force between **charged** objects which can still happen even when they are not touching

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7

Coulomb's Law

Electric force and electric charge are *directly* related and electric force and distance are *inversely* related

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8

electric insulator

A material in which electric charges **cannot** easily move (**higher** the resistance the better it is)

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9

electric conductor

A material in which electric charges **can** easily move (**lower** the resistance the better it is)

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10

Conduction

the transfer of electric charge by a simple *touch* when electric charges flow from one conductor to another

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11

Induction

the transfer of electric charge by __scrambling__ electrons in *conducting* materials. A **charged** object scrambles the *electrons* in **two** *conducting* materials it is brought near by repelling the *electrons* in the conductors so that **more** *electrons* are on the __far object__. When the conductors are separated, the charges are trapped and can't return to where they were before

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12

Friction

charge by __rubbing__. One object scrapes **electrons** off of another object, and both become charged in the process.

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13

polarized

when **electrons** concentrate at *one* end of an object

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14

electric discharge

the process of an *unbalanced* electric charge becoming balanced (lightning is a large electric discharge of static electricity

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15

grounding

providing a path for electric charges to flow safely into the ground

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16

electric current

The movement of electrically charged particles (electrons)

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17

electric circuit

A closed, complete path in which an electric current can travel

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18

Coulomb

How scientists count the number of *electrons* (electric charge)

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19

Ampere

SI unit of electric __current__

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20

1 amp =

1 coulomb of charge flows the wire per second

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21

Resistance

a measure of how difficult it is for *electrons* to flow through a material

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22

Ohm

A unit of electric __resistance__

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23

Ohm's Law

the relationship among current, voltage and resistance in a circuit

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24

Ohm's Law Eqation

V=I•R, R=V÷I, I=V÷R (V=voltage, I=current, R=resistance)

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25

Voltage and Current

**directly** related

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26

Resistance and Current

**inversely** related

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27

Voltage

the amount of energy the source uses to move *electrons* through an electric circuit

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28

The 3 parts of an electric circuit

Source of electric

*energy*Electrical

*devices*that transform electrical energy*Conductors*such as wires that connect everything

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29

appliances

convert electrical energy to other forms of energy

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30

Series circuits

A circuit that has only **one** path for the electric current to follow.

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31

Parallel circuits

An electric circuit with **two or more** paths through which energy can flow

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32

Fuse Box

A piece of metal that melts to break the circuit when there is too much *thermal* energy

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33

circut breaker

a switch that opens the circuit if the *current* is too high

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34

GFCI

Senses if not all of the *current* is flowing and opens the circuit

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35

short circuit

Any complete circuit with **no** resistance (it's connected to a battery, but not to any light sources or appliances)

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36

Electric shock

occurs when electric *current* flows through your body (0.01 A causes a shock but 0.1 A can kill you)

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