CONCEPT OF WIRELESS ELECTRICITY (Wi-Tricity) Our forefathers marveled at the invention of glowing light bulbs by Thomas Edison in 1879. However‚ to us 21st centurions‚ the light bulb is nothing out of the ordinary. When computers‚ cell phones‚ laptops‚ iPods‚ etc. were invented our antennas tweaked. Now this is what you call invention! However‚ as time’s progressing we are getting used to these devices. In fact‚ charging all these appliances has become so very cumbersome. Each appliance has its
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Electricity and electromagnetism: Webquest BBC Electricity and Magnetism http://www.bbc.co.uk/schools/ks3bitesize/science/energy_electricity_forces/magnets_electric_effects/activity.shtml Questions: 1. Why is an iron core needed in an electromagnet? 2. How are electromagnets different to either temporary or permanent magnets? 3. What happens when you add more coils to the wire in an electromagnet? What else can you do to increase the magnetic field of an electromagnet? Electromagnet Simulation
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Atomic Structure & Electricity 1. Draw an atom with an atomic number of 12. Label the protons‚ neutrons‚ and electrons. Use the periodic table to identify which atom you have drawn. 2. How many valence electrons are present in this atom? 2 3. Would this atom prefer to gain or lose electrons? Why? Lose‚ because the octet rule dictates that if there is less than 4 valance electrons‚ they would prefer to leave the atom. 4. Describe the differences between conductors‚ semiconductors
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The Importance of Electricity As long as the electricity is available‚ no one thinks much about it. The importance is realized when the power goes out. Whether it’s during the day or at night‚ electricity keeps our lives in order. It affects your business‚ your schedule and even your entertainment. Electricity runs everything in our everyday life. Gas stations can’t pump gas without it. Businesses have to close because their cash registers won’t work without it. Restaurants can’t cook food without
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Electricity is the set of physical phenomena associated with the presence and flow of electric charge. Electricity gives a wide variety of well- know effects such as lightning‚ static electricity‚ electro magnetic induction and the flow of electrical current. In addition‚ electricity permits the creation and reception of electromagnetic radiation such as radio waves. Electrical phenomena have been studied since antiquity‚ though advances in the science were not made until the seventeenth and eighteenth
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habit‚ we heavily depend on electricty to function. The majority of items that are used on a daily basis depend on electricity to function. Modern socirety adapted to electricity more than ever. There is no specific date as to when electricity was discovered. In June 1752 Benjamin Franklin proved that lightening is electricity. In 1791 Galvani publisged his doscoverey of Bio electricity. In 1800 Volta invented the Galvanic cell‚ in which this day in age we call it the battery. Without these advances
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An Entire Day Without Electricity For most people living in the industrialised world‚ electricity is one of the basic necessities. Electricity has become so ingrained with our everyday lives‚ that it is difficult to imagine living without it. This article explores what an ordinary day would look like in the life of a regular person if there suddenly were no electricity available for an entire day. Morning Unless you are lucky enough to wake up when the sun rises or you have a rooster in your
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Hazards of Static Electricity; Lightning Lightning is a massive electrostatic discharge between the electrically charged regions within clouds or between a cloud and the surface of a planet. It is the sudden high-current discharge caused by the atmosphere’s electrical breakdown. Lightning is also one of the most deadly natural phenomena known to man. Lightning is an electric current; thus within a thundercloud up in the sky‚ many small bits of ice (frozen raindrops) collide into each other as
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150 years ago‚ approximately around 1886‚ electricity was becoming a very exciting thing as AC plants started to appear all over the world. This meant great change for not only our establishments but also‚ for families that were near it and could afford it. It was the dawn of aluminum‚ cars and now a better way of life with electricity‚ life was about to get more exciting as well as easier for many families. Around the time of the late 1800’s‚ under the idea of “separate spheres”‚ caring for children
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Current electricity: 1) Give an equation to calculate resistance. 2) Give the meaning and the unit of each symbol. 3) Complete the following table Resistance (Ω) | Current strength (A) | Potential difference (v) | | 12 | 38 | | 0.4 | 32 | 75 | 96 | | 36 | 15 | | 75 | | 0.25 | 135 | | 27 | 4) An electric frying pan is connected to a 220V power point. If the current in the element is 12 A‚ calculate the resistance of the element 5) What will the current
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