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HORSEPOWER = a unit of power equal to a rate of 33,000 foot - pounds per minute (the force required to raise 33,000 pounds at the rate of one foot per minute) WATT = a unit of electrical power equal to one ampere under one volt of pressure, or one joule per second

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Infographic: Electricity A visual cheat sheet

Infographic: Electricity A visual cheat sheet about electrical physics, containing the most important formulas of current and Ohm’s law expressed through an impossible water circuit analogy. (by Pierluigi Scotolati)


Bảng công thức tính toán volt, ampere, watt,...

BTU = British Thermal Unit, a unit of heat equal to 252 calories, or the quantity of heat required to raise the temperature of one pound of water from 62 °F to 63 °F JOULE = a unit of electrical energy or work equivalent to the work done to raise one coulomb of electricity one volt, or in maintaining for one second a current of one ampere against a resistance of one ohm FOOT POUND = a unit of work equal to the amount of energy required to raise a weight of one pound a distance of one foot

View the Lutron FS-5F Rotary 120 Volt 5 Ampere Single Pole Adjustable Speed Fan Control with Factory Set Minimum Speed at

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An electronics desk reference.The volt, ohm, and ampere are related in the Ohm's Law Wheel. The resistor color code is graphically shown. A chart of circuit symbols is also given.