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Why is the electrical frequency for AC power 60 Hz in the US and 50 Hz in Europe and how were the frequencies determined?
Wiki User
∙ 17y ago
You need alternating current to operate a transformer. (It does not work with DC). Transformers are required to step up and down the voltage which is required to transport electric energy in an economic way. frequency's of 40 to 400 Hz work fairly well for transformers, and the choice with in this range must have been fairly arbitrairly. But one can imagine that the number 60 is inspired minutes of a clock, wher as the number 50 is inspired by the decimal number counting (a half of 100). By the way 60 Hz is slightly more efficient. A US transformer often has a hard life in Europe. For weight saving the frequency of installations in airplanes are historically 400Hz. Transformers can be much smaller this way.
Wiki User
∙ 17y ago
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'Hz' is the symbol for 'hertz', the SI unit for frequency -equivalent to a 'cycle per second'. The frequency of your supply is 50 Hz in Europe, or 60 Hz in North America.The 'watt' is the SI unit for power, which is the rate at which your electrical appliances use energy.
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To convert frequency (Hz) to power (Watts), you cannot do a direct conversion as they are different units. Hertz (Hz) is a measurement of frequency, while Watts (W) is a unit of power. The frequency of 50 Hz in Europe refers to the cycles per second in the electrical supply, not the power consumption. To determine power consumption in watts, you would need additional information such as voltage and current.
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