Physics- Grade 9 electricity

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Electricity

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29 Terms

1

Electricity

The set of physical phenomena associated with the presence and motion of matter that has a property of electric charge.

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2

Parallel circuit

A circuit that has more than one pathway for electrons to follow.

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3

Series circuit

A circuit that has a single pathway for electrons to follow.

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4

Electric charge

The ability of electric charge to move, which is essential for the utility of electrical energy.

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5

Static electricity

The buildup of positive or negative charge on materials.

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6

Current electricity

The energy of steadily moving electric charge, used by electric devices such as lamps and computers.

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7

Circuit

A pathway for electrons to follow, allowing the flow of electric current.

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8

Resistance

A measure of how much an object opposes the flow of electric current.

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9

Equation of voltage is?

V= e/q units

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10

Equation of current is?

I= q/t rate

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11

Energy mass

it has no mass

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12

Type of energy in a battery

chemical energy

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13

Electrodes

conductors

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14

electrolytes

solution with ions

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15

primary battery

only one use

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16

secondary battery

can be reused like phone battery

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17

Fuel cells

chemical reactions for energy

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18

Hydrogen fuel cell

H and O combine and make energy

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19

DC

Moves in one way

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20

AC

Moves both ways

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21

Electrical energy

can not be found in nature

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22

(A)

Amperes unit

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23

Fuses

can cut off electric flow if too high. Only once

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24

Cricut breakers

can cut off electric flow if too high. more then once

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25

voltmeter

measures the load through specific load

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26

Resistor

ability to appose the electric current

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27

Unit Ohms

resistors

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28

what effects resistance

too hot, too long, small cross section area, insulators/ materials

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29

resistors use what to make current slower

energy, all loads are resistors

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