Difference between revisions of "Power"
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In [[physics]], power is the rate of [[work]] done per unit [[time]]. In [[electricity]], power is the product of [[voltage]] and [[current]]. Both of these are expressed in [[Watt]]s. | In [[physics]], power is the rate of [[work]] done per unit [[time]]. In [[electricity]], power is the product of [[voltage]] and [[current]]. Both of these are expressed in [[Watt]]s. | ||
| − | In [[mathematics]], a power of a number is the result of [[exponentiation]] - multiplying | + | In [[mathematics]], a power of a number is the result of [[exponentiation]] - multiplying a number by itself a specified number of times. |
[[category:legal terms]] | [[category:legal terms]] | ||
[[category:physics]] | [[category:physics]] | ||
[[category:mathematics]] | [[category:mathematics]] | ||
Revision as of 02:53, October 9, 2007
Power is the ability or authority to take effective action or exercise control. Thus in a deliberative body such as Congress, the faction able to assemble a majority bloc of votes is the faction in power. Putting three aircraft carriers into the North Arabian Sea is an example of the projection of military power.
In physics, power is the rate of work done per unit time. In electricity, power is the product of voltage and current. Both of these are expressed in Watts.
In mathematics, a power of a number is the result of exponentiation - multiplying a number by itself a specified number of times.