GCSE Physics Coursework - Resistance of a Wire Coursework Resistance of a Wire Task To investigate how the resistance of a wire is affected by the length of the wire. Theory What is resistance? Electricity is conducted through a conductor‚ in this case wire‚ by means of free electrons. The number of free electrons depends on the material and more free electrons means a better conductor‚ i.e. it has less resistance. For example‚ gold has more free electrons than
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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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In the passage "Energy Story" it explains the basis of how electricity works. The purpose of this is to teach you about protons‚ neutrons‚ electrons‚ etc. it teaches you the negative‚ positive charges and how it works. Also includes things like conductors and insulators. Some examples of this is like how copper‚ aluminum and steel are good conductors or how rubber‚ plastic‚ and glass are great for insulating electricity. Some experiments that are shown in this passage is making positive and negative
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To do and not to do with electricity Hey! Are you among those who enjoy doing their work on their own? If yes‚ then this one’s for you!! I understand how good it feels to have your work done on your own‚ save money and somehow‚ getting into the expert’s shoes. One thing most of these people forget is that it can just be lethal down the line doing things one doesn’t know about. Especially‚ when it comes to doing an electrician’s job! That’s when a professional electrician comes into the picture
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The experiment I chose was “The Magnet Rifle”. I am going to now tell you all of the research that I have done for my experiment. “What is a Magnet?” A magnet is a piece of iron and it has its own component atoms. One magnet can attract other iron‚ ore and even alloy. But the objects have to be containing one of those materials so it an come together. If two magnets align it it is considered to be called a magnetic field. Compasses are used by magnetic fields coming from the North and South Poles
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cross-section R R l A l A ( = resistivity) Unit ( ) m Resistance in a series connection R = R1 + R2 + R3 + … + Rn Resistance in parallel 1 R 1 R1 1 R2 ... 1 Rn Heating Effect of current Electric energy = VIt Heat‚ H VIt I 2 Rt Application Electric iron‚ toaster‚ fused wire Fused wire: a low-melting point wire connected in series with electric devices for safety. Electric power P VI I R 2 V2 R Unit – 1 kWh = 3.6 × 106 J 1 W = 1V × 1A Definitions Potential difference: The potential
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potential to impact on the daily lives of everyone in the world. It will not massively reduce industrial pollution but will improve working conditions for thousands of people and significantly help in the creation of job and wealth. Some important applications of ILs in industries/technologies are discussed in the later part of this
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Wireless energy transfer or wireless power is the transmission of electrical energy from a power source to an electrical load without artificial interconnecting conductors. Wireless transmission is useful in cases where interconnecting wires are inconvenient‚ hazardous‚ or impossible. The most common form of wireless power transmission is carried out using direct induction followed by resonant magnetic induction. Other methods under consideration include electromagnetic radiation in the form of microwaves or lasers
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batteries such as starting‚ lighting‚ and ignition (SLI) batteries. The reason for this is because they are supposed to give power during a large amount of time. Because of this‚ deep cycle batteries are used instead of SLI batteries for these applications. Most current battery technologies have much lower specific energy; and this often impacts the maximum all-electric range of the vehicles. However‚ metal-air
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College Physics OpenStax College Rice University 6100 Main Street MS-380 Houston‚ Texas 77005 To learn more about OpenStax College‚ visit http://openstaxcollege.org. Individual print copies and bulk orders can be purchased through our website. © 2013 by Rice University. The textbook content was produced by OpenStax College and is licensed under a Creative Commons Attribution 3.0 Unported License. Under the license‚ any user of the textbook or the textbook content herein must provide proper attribution
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