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An ampere-hour or amp-hour (symbol: A⋅h or A h; often simplified as Ah) is a unit of electric charge, having dimensions of electric current multiplied by time, equal to the charge transferred by a steady current of one ampere flowing for one hour, or 3,600 coulombs. [1] [2] The commonly seen milliampere-hour (symbol: mA⋅h, mA h, often ...
≡ 1 Gcal th = 4.184 × 10 9 J: watt-hour: ... = 0.1 Pa⋅s pound per foot hour: lb/(ft⋅h) ... milliampere hour: mA⋅h ≡ 0.001 A × 1 h
1 terawatt hour per year = 1 × 10 12 W·h / (365 days × 24 hours per day) ≈ 114 million watts, equivalent to approximately 114 megawatts of constant power output. The watt-second is a unit of energy, equal to the joule. One kilowatt hour is 3,600,000 watt seconds.
This page was last edited on 1 April 2020, at 21:36 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may ...
All the SI prefixes are commonly applied to the watt-hour: a kilowatt-hour (kWh) is 1,000 Wh; a megawatt-hour (MWh) is 1 million Wh; a milliwatt-hour (mWh) is 1/1,000 Wh and so on. The kilowatt-hour is commonly used by electrical energy providers for purposes of billing, since the monthly energy consumption of a typical residential customer ...
Log-log graph of the effect of alternating current I of duration T passing from left hand to feet as defined in IEC 60479–1. [27] AC-1: imperceptible AC-2: perceptible but no muscle reaction AC-3: muscle contraction with reversible effects AC-4: possible irreversible effects AC-4.1: up to 5% probability of ventricular fibrillation
From January 2008 to May 2008, if you bought shares in companies when D. James Guzy joined the board, and sold them when he left, you would have a -10.0 percent return on your investment, compared to a -5.3 percent return from the S&P 500.
Other common and traditional measures are horsepower (hp), comparing to the power of a horse; one mechanical horsepower equals about 745.7 watts. Other units of power include ergs per second (erg/s), foot-pounds per minute, dBm , a logarithmic measure relative to a reference of 1 milliwatt, calories per hour, BTU per hour (BTU/h), and tons of ...