lamps with electricity. Switch on the button and there is the day-like light even in the darkest night. In summer seasons electric fans‚ air conditioning plants are used to provide us with cool atmosphere. In winter‚ heating plants are used to keep the room warm. Electric bells‚ press and stove are things of every-day use. People keep refrigerators in their homes to keep their food in a fresh condition. Indeed electricity serves as a faithful domestic servant in daily life. We all knew that trains
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As global warming is getting worse so is the nature that surrounds us. More and more trees are getting cut down and more roads and buildings are going up. People litter all over the place‚ but what they don’t realize is‚ most of that trash ends up in the ocean. Our beaches are becoming dirtier and trash filled. As a member of the Surfrider foundation‚ I preach to keep our beaches clean. Cleaner beaches and a cleaner ocean make more a better environment because the ocean makes up about 70% of the
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Lecture Notes: Basic Electricity Fall 2011 This course module introduces the basic physical models by which we explain the flow of electricity. The Bohr model of an atom – a nucleus surrounded by shells of electrons traveling in discrete orbits – is presented. Electrical current is described as a flow of electrons. Ohm’s law – the relationship between voltage‚ current and electrical resistance – is introduced. Learning Objectives Understanding the basic principles of electricity is a foundational
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Electricity generation is the process of creating electricity from other forms of energy. The fundamental principles of electricity generation were discovered during the 1820s and early 1830s by the British scientist Michael Faraday. His basic method is still used today: electricity is generated by the movement of a loop of wire‚ or disc of copper between the poles of a magnet.[1] For electric utilities‚ it is the first process in the delivery of electricity to consumers. The other processes
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Home Search Collections Journals About Contact us My IOPscience Wireless electricity (Power) transmission using solar based power satellite technology This content has been downloaded from IOPscience. Please scroll down to see the full text. 2013 J. Phys.: Conf. Ser. 439 012046 (http://iopscience.iop.org/1742-6596/439/1/012046) View the table of contents for this issue‚ or go to the journal homepage for more Download details: IP Address: 49.145.98.152 This content was downloaded on 12/01/2015
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CHAPTER - 12 ELECTRICITY HOTS Questions for Practice 1. Name a substance whose resistance almost remains unchanged by increase of temperature. 2. Name two special characteristics of heater coil. 3. A wire of resistance 4 ohms is bent to form a circle. What is the resistance between two diametrically opposite ends? 4. How does the resistance of a conductor change if its temperature is increased? 5. A current of 4A flows in a wire of resistance 60 ohms. Calculate electrical energy consumed in 2 minutes
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Electricity‚ being referred to as one of the primary agents of technological progress (Boylestad‚ 2002)‚ plays a vital role in securing the stability and mobility of the modern civilization in which many societies exist. Through simple observation‚ one can clearly say that electricity‚ indeed‚ lies through almost every aspect of human life in the present-day era‚ and that it has‚ in many levels‚ constantly revolutionized the way things are in the world as people know it. According to World Bank‚
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http://www.theguardian.com/uk/2000/dec/17/martinbright.theobserver Revealed: why evil lurks in us all Study shows that crude loyalty to our social group and blind obedience make tyranny possible anywhere Martin Bright‚ home affairs correspondent The Observer‚ Sunday 17 December 2000 Psychologists have struggled for decades to explain why ordinary people participate in atrocities such as the Nazi Holocaust or the Stalinist purges. Now experiments carried out in Britain reveal that most people
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Quality of life John Updike’s poem “Perfection Wasted” is a about death and what happens when our loved ones have passed and how their individualistic style can never be replaced. The poem consists of literary terms such as setting‚ figurative language‚ visual imagery and extended metaphor. The speaker helps the reader understand through comparing life as a stage‚ in which we create these unique qualities ‚ “our own brand of magic”‚ which can never be understudied by any other. I chose
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There is a quote by Helen Keller which states: “When one door of happiness closes‚ another opens; but often we look so long at the closed door that we do not see the one which has been opened for us.” I feel that this epitomises what Larkin was portraying in the poem ’Dockery and Son’; a feeling of regret and a wondering of what the ’other door’ might hold. It could be seen that the older door of happiness is Larkin’s youth: a time of freedom‚ when they could be ’unbreakfasted’ and live without
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