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: The '''mains''' in the houses in the [[UK]] provides a [[Potential Difference|potential difference]] of 230V and provides a maximum [[Electrical Current|current]] of 13A.
: The '''mains electricity''' is an [[Alternating Current|alternating current]] with a [[frequency]] of 50Hz.
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|[[File:OscilloscopeScreenAC1.png|center|400px]]
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|An [[oscilloscope]] trace of '''mains electricity''' shows its [[frequency]] is 50Hz as the time [[period]] is 0.02s per oscillation and the peak [[Potential Difference|potential difference]] is 320V, but the [[Mean Average|average]] over time is 230V.
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: The [[Power Supply|power supply]] for the '''mains electricity''' is a variety of [[Energy Resource|energy resources]] including; [[Coal#Power|Coal]], [[Natural Gas#Power|Natural Gas]], [[Nuclear Fuel#Power|Nuclear Fuel]] and [[Wind Power#Power|Wind]].
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