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A good explanation of electrical resistance, why it exists and the variables that affect it including wire length, width and material.
Good revision site aimed at UK A Level standard covering resistance, ohm's law, conductivity etc
Definition and links to related information on electrical resistance.
A useful animation to demonstrate the free electron model of current flow, showing electrical resistance in the copper wire of a lightbulb.
A useful collection of posters from the Institute of Electrical Engineers that cover the electrical symbols and other circuit information.
Allows various configurations of resistors to be put together and their total resistance calculated.
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.
A small interactive demonstration of current and resistance at the microscopic level.
Short summary of the properties of series and parallel suitable for UK GCSE level.
Short summary for UK GCSE level.
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