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Electrical resistance

A good explanation of electrical resistance, why it exists and the variables that affect it including wire length, width and material.

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http://www.physicsclassroom.com/Class/circuits/u9l3b.cfm

Electrical resistance

Good revision site aimed at UK A Level standard covering resistance, ohm's law, conductivity etc

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Hits: 2686

http://www.s-cool.co.uk/a-level/physics/resistance/revise-it/resistance-ohms-law-and-conductance

Resistance

Definition and links to related information on electrical resistance.

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Hits: 1683

http://hyperphysics.phy-astr.gsu.edu/hbase/electric/resis.html#c1

Resistance at the molecular level

A useful animation to demonstrate the free electron model of current flow, showing electrical resistance in the copper wire of a lightbulb.

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Hits: 2439

http://micro.magnet.fsu.edu/electromag/java/filamentresistance/

Electrical symbols, circuits and safety - posters

A useful collection of posters from the Institute of Electrical Engineers that cover the electrical symbols and other circuit information.

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Hits: 4535

http://faraday.theiet.org/posters-print/posters/index.cfm

Resistance (Applet)

Allows various configurations of resistors to be put together and their total resistance calculated.

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Hits: 1655

http://lectureonline.cl.msu.edu/~mmp/kap20/RR506a.htm

Colour Coded Resistance Calculator

A simple program to help students calculate the resistance of a certain resistor. A very easy and simple site that works well and looks good.

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Hits: 1169

http://www.dannyg.com/examples/res2/resistor.htm

Resistance at the Molecular Level

A small interactive demonstration of current and resistance at the microscopic level.

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Hits: 2

http://micro.magnet.fsu.edu/electromag/java/filamentresistance/index.html

Types of Electrical Circuits

Short summary of the properties of series and parallel suitable for UK GCSE level.

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Hits: 2311

http://revisioncentre.co.uk/gcse/physics/types_of_circuit.html

Charge, current, voltage and resistance

Short summary for UK GCSE level.

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Hits: 1341

http://revisioncentre.co.uk/gcse/physics/charge_current_voltage_resistance.html
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