![]() Work backwards with Watt’s Law and divide the wattage by the volts:Īmps = watts ÷ volts Example: 600 watts are being sent at 120 volts. Power = 600W How to convert watts to amps Watts = amps × volts Example: 5 amps are being sent at 120 volts. The wattage (power produced / P) is calculated by multiplying the amps (current / I) by the voltage (force / E): The Watt’s Law formula is all that’s needed for these unit conversions. Power supplied to homes and businesses uses AC supply. In Europe, the UK, East Japan and most of Australia, South America, Africa and Asia, the current changes direction 50 times per second, which is 50Hz. In Northern America and Western Japan, this usually happens 60 times per second, or 60Hz / hertz. A flashlight with a battery uses a direct current.ĪC stands for alternating current, when the current periodically changes direction. AC/DCĭC stands for direct current, when the current flows in one single direction. A water wheel would turn faster and longer, generating more energy if it uses increased water volume and higher water pressure the same applies to the wattage if amps and volts are increased. Multiplying amps (water volume) by volts (water pressure) gives you the wattage (the resulting power or energy). Watts represent the amount of energy produced by the amps and volts working together. North American homes typically use 120V for their electrical supply, whilst 230V is common across many other countries. In the hose analogy, the volts would be the water pressure. ![]() They measure the force required to make the electrical current (amps) flow. In this analogy, the quantity (volume) of water would be the amps. It can be helpful to imagine electrical current as water in a hose. Watts and amps conversions at 12V (DC) Powerįormula for converting watts to amps (at a fixed voltage) is:įormula for converting amps to watts (at a fixed voltage) is:Īmps are amperes, a unit which measures electrical current. Note: conversions are for educational purposes only and are rounded Watts and amps conversions at 120V (AC) Power
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