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- Dictionarypow·er/ˈpou(ə)r/
noun
- 1. the ability to do something or act in a particular way, especially as a faculty or quality: "the power of speech" Similar Opposite
- 2. the capacity or ability to direct or influence the behavior of others or the course of events: "she had me under her power"
verb
- 1. supply (a device) with mechanical or electrical energy: "the car is powered by a fuel-injected 3.0-liter engine"
- 2. move or travel with great speed or force: "they powered past the dock toward the mouth of the creek"
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What is Power? We can define power as the rate of doing work, it is the work done in unit time. The SI unit of power is Watt (W) which is joules per second (J/s). Sometimes the power of motor vehicles and other machines is given in terms of Horsepower (hp), which is approximately equal to 745.7 watts.
Work, Energy and Power are fundamental concepts of Physics. Work is said to be done when a force (push or pull) applied to an object causes a displacement of the object. We define the capacity to do the work as energy. Power is the work done per unit of time. This article discusses work, energy and power in detail.
The power set is a set which includes all the subsets including the empty set and the original set itself. It is usually denoted by P. Power set is a type of sets, whose cardinality depends on the number of subsets formed for a given set. If set A = {x, y, z} is a set, then all its subsets {x}, {y}, {z}, {x, y}, {y, z}, {x, z}, {x, y, z} and ...
Electric Power. In physics, electric power measures the rate of electrical energy transfer by an electric circuit per unit of time. Denoted by P and measured using the SI unit of power which is watt or one joule per second. Electric power is commonly supplied by electric batteries and produced by electric generators. Table of Contents:
A high power factor indicates that the power supplied to the electrical system is effectively used. A system with low power factor doesn’t effectively consume the incoming electric supply and results in losses. There is no power factor involved in DC circuits due to zero frequency. But, in AC circuits, the value of power factor always lies ...
Solved Questions. Example 1: Write 7 x 7 x 7 x 7 x 7 x 7 x 7 x 7 in exponent form. Solution: In this problem 7s are written 8 times, so the problem can be rewritten as an exponent of 8. 7 x 7 x 7 x 7 x 7 x 7 x 7 x 7 = 78. Example 2: Write below problems like exponents: 3 x 3 x 3 x 3 x 3 x 3. 7 x 7 x 7 x 7 x 7.
1 dioptre of power: 1 dioptre of lens power is defined as the unit of measurement of a lens's or curved mirror's optical power equal to the reciprocal of focal length (f). P = 1 f = 1 D; The focal length is measured in metres. The SI unit of lens power is dioptre, which has a focal length of one metre and is denoted by the letter D.
Define the unit of power of a lens. (c) A combination of lenses for a camera contains two converging lenses of focal lengths 20 cm and 40 cm and a diverging lens of focal length 50 cm. Find the power and focal length of the combination.A optical instrument in which the above arrangement of convex lens is used is a convex lens used to burn paper by focusing sunlight.
The prudential reasons stress that power-sharing will bring out better outcomes, whereas the moral reasons emphasise the act of power-sharing as valuable. Form of Power Sharing. Most of you must think that sharing power = dividing power = weakening the country. A similar thing was believed in the past.
A power series is a continuous function of x within its interval of convergence. A power series can be integrated term by term within the limits of (-R, R). Uniqueness of power series: If two power series have same radius of convergence, and converges to the same function then the power series are identical. Solved Examples on Power Series ...
