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Electricity. In physics and engineering, the rate at which work is done. This is power over time which is actually a measurement of energy used and not power. One horsepower is equal to the power it takes to lift 550 pounds up one foot in one second.
b. often powers A specific capacity, faculty, or aptitude: her powers of concentration. P = V x I Hydroelectric power plants usually are located in dams that impound rivers, though tidal action is used in some coastal areas. er (pow'ĕr), 1. Power is the rate at which energy is transferred, used, or transformed. The phrase "electric power" specifically refers to power generated by electricity, or the flow of electrons.
A given amount of work can be done by a low-powered motor in a long time or by a high-powered motor in a short time.
power: Also see current , voltage , resistance ,and Ohm's Law . Muscles make a body lift weights, combustion engines propel a car and wind turbines spin generators.
For a path conducting electrical current, such as a component in an electric …
The ability or capacity to act or do something effectively: Is it in your power to undo this injustice? Activities Power is an amount of energy supplied in a certain time.
Power, in science and engineering, time rate of doing work or delivering energy, expressible as the amount of work done W, or energy transferred, divided by the time interval t—or W/t.
Power is defined as work per unit time. The SI unit of power is the watt (W), which is equal to one joule per second. If a bulb has a power rating of 50 watts, it will produce 50 joules per second. The dimension of power is energy divided by time. The power exerted by the Space Shuttle rockets at lift-off is around 12 billion watts. Energy = Power x Time = 120 x 12 = 1.44 kWh (kilowatt hour) Now for the next 12 hours only bulb A would remain ON hence, Power = 60 watts.
Science definition: Science is the study of the nature and behaviour of natural things and the knowledge that... | Meaning, pronunciation, translations and examples 3. In optics, the refractive vergence of a lens. Power is usually measured in watts (especially for electrical power) or horsepower (especially for mechanical power). Power is measured in watts.Energy is measured in joules.. 1 watt = 1 joule per second.. The word "per" means "divided by", so power = energy ÷ time. In an hour (3600 seconds) it will produce 180,000 joules. ADVERTISEMENTS: Definition of Power: Power and authority are perhaps the most vital aspects of all organisations in general and political organisations in particular. Sources of power in the real world abound. Strengthen students’ science knowledge with more than 90 lessons complete with experiments and assessments to gauge students’ capabilities across two levels of science instruction. P = E ÷ t. Since 1 volt = 1 joule per coulomb and 1 amp = 1 coulomb per second then watts = volts x amps, or power = voltage x current.
Hydroelectric power, electricity produced from generators driven by turbines that convert the potential energy of moving water into mechanical energy. er (pou′ər) n. 1. a. See Synonyms at strength.
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