current and static electricity

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27 Terms

1

current

the flow of electrons

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2

voltage

how strong the current is in a circuit, difference in electrical potential between two points

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3

resistance

resisting the flow of electrons

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4
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simple circuit

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5
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series circuit

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6
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parallel circuit

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7
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battery

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8
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light

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9
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single battery cell

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10
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resistor

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11
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switch

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12
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motor

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13
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fuse

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14
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ammeter

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15
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voltmeter

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16

how to measure with an ammeter

turn the dial to a, insert black lead into com, and red lead into v, place the ammeter cords in the same way you'd place the wires in the circuit therefore the electrons will flow through the ammeter

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17

how to measure with a voltmeter

turn the dial to v, insert black lead into com, and red lead into v, connect the voltmeter cords in parallel with the black lead first and red lead second

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18

voltage and current (series circuit)

voltage = add up all the voltage values to get sum, current = to each other

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19

voltage and current (parallel circuit)

voltage = to each other, current = add up all the current values to get the sum

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20

the relationship between current and voltage

voltage pushes the current through the device

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21

factors that affect resistance on a circuit diagram

material like copper has a lower resistance, length longer wires have a greater resistance, temperature heating a wire increases it's resistance

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22

what causes a short circuit

when a low resistance path not fit to have electrons flow through it receives a high electrical current

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23

ohms law

v = ir

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24

law of attraction

like charges repel each other, opposing charges attract each other

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25

insulator

keeps electricity in it's material and has a higher resistance for electrons to flow through

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26

conductor

low resistance, lets electricity flow through it easily

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27

static electricity

when two materials cause friction by rubbing together the negatively charged one loses electrons and becomes positively charged and the positively charged material gains electrons and becomes negatively charged

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