“IF THERE IS NO ELECTRICITY” To think of life without electricity is almost impossible today. Elec tricity provides all the comforts of life. We find ourselves completely helpless and feel its importance whenever power fails or when the sup ply is irregular. We curse the government for its failure to supply unin terrupted electric supply. In case of no electricity our life would be totally different. We will have to use earthen lamps‚ lantern or candle-light instead of electric bulbs and tubes
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History of Electricity Our knowledge of electricity has started from very humble beginnings when you look at where we are today. Electricity has been around for as long as humans have. When lightning strikes ancient people may not have understood what it was or why it happened‚ but they at the very least witnessed it happen. Nature acted as a sort of catalyst to spark the curiosity of early people. It was only until sometime between 624 BC and 546 BC where an understanding of electricity began to
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force. It is therefore expected that the cylinder underwent no permanent deformation during this experiment. Strain rosette measurements were taken from the graph a s pressure of 25Mpa to calculate the angle from the principal axis. At 25mPa grid one (1) gave value of ‚ grid two (2) and grid three (3) These values were then used to calculated then used to derive the principal strains using equation 3. Principal strain was calculated to be and .Using these principal strains the angle from the
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Physics GCSE coursework: Resistance of wire Aim: To investigate if the length of wire affects its resistance. Prediction (Hypothesis): I predict that the longer the wire the higher the resistance‚ and the shorter the wire the lower the resistance. Knowledge: Resistance is that property of electric components that turn electric energy into heat in opposing the passing of an electric current.It can be beneficial‚ as in electric heaters‚ or a pest‚ as in light bulbs‚ where the heat
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to investigate how the resistance of the wire affects a current flowing through a wire. I know that as resistance changes‚ current changes‚ as Ohm’s law: I = V/R. If one part of an equation changes‚ the equal must be done to the opposite side. To detect how resistance affects current‚ I must first discover what factors affect resistance. These factors are: · Length of the wire if a wire is longer; there are more particles for electrons to move through‚ and therefore more resistance. · Conductivity
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Electricity and Magnetism Electricity Circuit symbols Potential difference The energy which is delivered to an electric circuit comes from the supply. The greater the potential difference of the power supply the more energy is delivered. Potential difference is measured in volts‚ which has the unit symbol V. Cells in series The more chemical cells that are connected in series the greater the potential difference that they supply. The potential difference of a number of cells connected
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Electricity and magnetism are two different aspects of one force. This force is called the electromagnetic force. Electricity can be generated by rotating coils of wire in the vicinity of a magnet. When a force moves objects toward and away from each other it is called electricity. When it comes to magnets‚ Earth and other planets behave like giant magnets. The first know magnets were iron materials. If one piece of the iron was placed in contact with the other‚ it attracted it. In ancient times
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The call in the epic hero cycle is when the hero is challenged to face the unknown. In the song “Through the Wire”‚ Kanye West is called into the epic hero cycle when he gets into a car crash. This can be seen in “Through the Wire” when West said‚ “There’s been an accident like GEICO” (45). He is called into the challenge of recovery. West enters this challenge unwillingly. The car crash he got in was near fatal‚ and everyone involved had serious injuries. This is ‘The Call’ for him‚ because these
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First of all‚ specially formulated paint is mixed with a chemical catalyst and is then given a positive charge. The metal object that’s going to be painted (and it must be a metal object for this process to actually work) is then grounded by having a wire attached to it. Since the paint and the metal object are now oppositely charged‚ with the paint being positive and the object being negative‚ the paint will be attracted to the metal object as if it were a magnet. • Painting • Once
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What is Electricity? Electricity is one of the most powerful forces in our lives. As a matter of fact‚ it can even kill you. The most vital part of electricity is called electric energy. This is what we commonly think of when we hear the word electricity. “Electricity” reminds us of anything that we plug into an electrical outlet in order to make it work‚ such as lights‚ refrigerators‚ video games‚ microwaves‚ and computers. Scientists discovered ways to produce electric energy in large amounts
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