OHM'S LAW

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32 Terms

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Ampere

named after Andre Marie Ampere

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Andre Marie Ampere

Isaac newton of electricity

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Conventional current

from positive to negative terminal

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Direct Current

one way

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Alternating Current

charging every 16 seconds

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Current Density (J)

proportional to electric negativity

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Resistance (R)

emepedes the flow of current

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Ohm

unim of resitance

named after George Simon Ohm

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Electric conductivity

relative to current density and field

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Resistor

restrict the flow of current

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Potentiometer

3 terminal Variable resistor

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Black

0

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Brown

1

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Red

2

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Orange

3

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Yellow

4

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Green

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Blue

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Violet

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Gray

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White

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Factors affecting Resistance of wore

Cross sectional Area (A)

length

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Cross sectional Area

Greater the CSA, the lesser the resistance

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Longer

longer the wire the higher the resistance

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Vesistivity

material of wire

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Conductor

small resistance

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insulator

big resistance

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insulator

decrease temperature

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conductor

increase temperature

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