by Safricanluke
Last updated 8 years ago


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Electricity is the flow or movement of electric charge. William Gilbert was the first to use the term electricity in 1600.

A single unit of electrical charge is referred to as a Coulomb and is denoted by the use of q. Electrical charge can be positive, negative or neutral. The unit is named after its founder Charles-Augustin de Coulomb.

The difference in electric potential between two connected points is referred to as the voltage. It is measured in Volts, and is denoted by V. The unit is named after its founder Alessandro Volta.

The flow of electricity is measured by the ampere, or amp, and is denoted by I. One ampere is one coulomb per second, it was named by André-Marie Ampère, the physacist who discovered it.

Georg Ohm, a German physicist, discovered that there was a direct corrolation between the voltage and current of a circuit. This led to the discovery of resistance. Resistance is the measure of how much electricity a conductor uses. This is measured by ohms and denoted with Ω, or R. The formula for Ohm's law is V=IR




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