Electricity

Created by: Alex Nolan
Created on: 03-04-13 18:31

A build up of STATIC is caused by FRICTION

When two INSULATING materials are RUBBED together, electrons are SCRAPED OFF ONE and DUMPED on the other.Electrons are NEGATIVELY CHARGED so this leaves a POSITIVE static charge on 1(electrons scraped off)and a NEGATIVE static charge on the other(+E)

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Current

The FLOW of electric charge round the circuit. Current will only flow through a component if there a POTENTIAL DIFFERENCE across that component. UNIT: Ampere (Amps), A.

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Potential Difference

The potential difference is the WORK DONE PER COULOMB OF CHARGE that passes between two points in a circuit. UNIT: Volt, V

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Resistance

Anything in the circuit which SLOWS the flow (CURRENT) down. UNIT: Ohm,Ω

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Equations

Current=Charge/Time (I=Q/T) P.D.=Work Done/Charge P.D.=Current*Resistance (V=I*R)

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Other cards in this set

Card 2

Front

The FLOW of electric charge round the circuit. Current will only flow through a component if there a POTENTIAL DIFFERENCE across that component. UNIT: Ampere (Amps), A.

Back

Current

Card 3

Front

The potential difference is the WORK DONE PER COULOMB OF CHARGE that passes between two points in a circuit. UNIT: Volt, V

Back

Card 4

Front

Anything in the circuit which SLOWS the flow (CURRENT) down. UNIT: Ohm,Ω

Back

Card 5

Front

Current=Charge/Time (I=Q/T) P.D.=Work Done/Charge P.D.=Current*Resistance (V=I*R)

Back

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Electricity