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Ohm's law background
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Circuits, what is up with that? First you need to understand how all the parts of a circuit relate. The main thing that a circuit has is conductance and that all the parts are conductors. Conductors are materials in which electric charges move freely. If the material isn't a conductor, it is either a insulator or a semiconductor. Conductors are mainly metalic substances such as copper, aluminum, and gold. Conductors allow a charge to build up and move "freely" through the conductor. When dealing with circuits and the moving of electrons, free movement at the moment is the best movement. I will get to reasons to but a damper on the movement of electrons later. Now, if a conductor allows a charge to build up and move freely, then it should be easy to understand that an insulator is just the opposite, it might build up a charge but that charge isn't going anywhere. Semiconductors is the crossbreed of the other two types. Semiconductors are usually a conducting material that has been "doped" or has been added to from a insulating material. This makes it so the charges don't want to move as freely but they can still move.
Now, just like lightning, charges have a tendency to try to make their way to the earth if they can. This is why if you have a conducting material and connect it to the earth with a wire or something, it is said to be grounded. Grounding is a good thing to do with circuits because if there is too much charge going through a circuit, you don't want it to stay in the circuit and fry everything, grounding a circuit is generally safe. To finish off the idea of the very basic circuit, we know that it allows a charge to build up and move through it, now we need to know that the circuit must be complete. The ending picture of the circuit must make a complete loop so that those charges that like to move have somewhere to allways go. What happens if you hook a wire from one end of a battery to nothing else.....NOTHING. The circuit is not completed therefore the charges can't move off the end of the wire and continue to go.
Voltage, Current, and Resistance
When working with circuits, the three basic elements to anaylizing the circuit are voltage, current, and resistance. These three readings help you find out all the information you need on how the cicuit will work and they are all related to eachother through Ohm's law which states that Voltage is equal to current times resistance.
The first term that I noted during the movie was Conductive Polymers. Conductive polymers are almost always organic meaning a large class of chemical compounds whose molecules contain carbon. These polymers have extended delocalized bonds which are bonds found in a molecule that do not belong to a single atom or covalent bond. They are conjugated systems of double bonds and in a aromatic systems. The conjugated systems are atoms covalently bonded with alternating single and double bonds. When the electrons are removed or added into the valence bands the electrical conductivity increases. The conductive polymer has a low conductivity until the electron is removed from the valence band called (p-doping) or (n-doping) until it becomes more conductive. The movement of the charges is what is responsible for electrical conductivity. These polymers are plastic which are organic polymers and with mechanical properties such as flexibility and elasticity.
the blueprint he does not realize what the circuit design is for, and what is
Metals contain a sea of electrons (which are negatively charged) and which flow throughout the metal. This is what allows electric current to flow so well in all metals. An electrode is a component of an electric circuit that connects the wiring of the circuit to a gas or electrolyte. A compound that conducts in a solution is called an electrolyte. The electrically positive electrode is called the anode and the negative electrode the cathode.
The clouds electric field goes through a space surrounding the electrons on earth's outer ring. Basically anything we can touch has a static charge when ...
Electricity is an interesting subject. There is so much you can learn from it, like how our lights turn on or how we make cell phones. This is all a mystery until we finally get a little bit of information in our brains. I've just read two articles, "Energy Story" and "Conducting solutions". I also watched a video called Hands-on Science with Squishy circuits. I learned so much valuable information from these resources.
One of the most interesting phenomenon related to memory is memory distortions. One way in which they occur is through suggestibility, where people begin to remember false experiences if researchers suggested to them that they experienced it (Sternberg and Sternberg, 2012). In real-life situations, this is caused in part by memory being constructive “in that prior experiences affects how we recall things and what we actually recall from memory” (Sternberg and Sternberg, 2012). People’s prior experiences, including their bias and expectations, may influence how they experience false memory formations; the formation of false memories is also affected by several possible factors, one of which may be sleep deprivation (Frenda, Patihis, Loftus,
Students will make functional electrical cells (i.e., batteries) and determine the relative strength of each type of cell.
The three stories that I have read about electricity has a purpose or a main idea. In "Energy Story" it was about showing the importance of electricity and how much an average human has that is bound to work with electricity. In "Hands-on Science" they taught you how to make your own circuit or electricity by normal thing in your kitchen. Finally, in "Conducting Solutions" they think of random stuff to conduct solutions for electricity. All three of these stories had something in common, these where all ways to show the importance of electricity and how to save it.
First off, what is current. Current is expressed in a unit called Amps. Amps are a measurement of how many electrons pass per second. That is to say, a wire with 40 coulombs passing any point in a 2 seconds would be said to have 20 Amps of current (40 Coulombs (a unit of charge given as 6.24x1018 electrons) / time in seconds or in this case, 2 seconds. The Amp is also known as Coulombs per second) Another trick about current is that it is measured in the movement of the positive charge. Literally that is to say the current moves in oppostion to the electrons. This is because originally it was thought that the positive charge is what moved, both are viable, but in reality a positive charge is generally fixed since within an atom the electrons are migratory, while the protons and neutrons tend to be stationary.
Thomas Edison, famed for inventing the light bulb and phonograph, embraced the standard method of direct-current, or DC, power distribution. Produced by batteries and dynamos, DC describes the unidirectional flow of an electrical charge. But George Westinghouse, the electrical engineer who built a fortune by making improvements to America’s railroad system, threw his weight behind the development of a power network based on alternating current, or AC, a more efficient transmission method whose magnitude changes cyclically. Nikola Tesla, one of the most eccentric and prolific electrical engineers in history also was in favor of AC. Tesla, whose work formed the basis of AC power, is one of the most admired pioneers in electrical engineering. In the 20th century, electrical engineering, like many other technologies, has expanded leaps and bounds. By 1900, the radio was already in common use, and developments over the next few decades made it even more useful. Guglielmo Marconi, the inventor of the telegraph, made radio useful worldwide, developing the first transatlantic radio transmissions. During and after World War II, radio became more prevalent in communications and guidance. The development of the integrated circuit in 1958 led to the advent of electronic engineering, after which came the personal computer,
According to the “Background” paragraph of the article, in the early 1890s, the American Press Association put together a feature series of writings in preparation for the World’s Columbian Exposition in Chicago (Background). They asked seventy-four notable Americans to make predictions about the American life in the 1990s. An electrical engineer, John J. Carty, was one of the several prominent Americans that were asked to share his predictions (Background). The segments ran in newspapers across the country from March through May 1893, in time for the World’s Fair opening (Background). In his writing, Carty mainly focuses on the topic of electricity and how it will be simply revolutionary (Carty). His purpose in writing the essay was to share
In electroplating the flow of current is used to coat one metal with another such as copper with silver or gold. This is done when electric current is passes through a solution (electrolyte). When two electrodes are connected to a power supply in the form of a circuit, current or electricity is carried through the power supply, there is a splitting in the electrolyte and atoms from the metal that are in the solution are carried to the top of one of the electrodes. This is called electroplating and is used on many metals to prevent corrosion from occurring. Both of the materials must be conductors in order for current to be carried through. Electroplating is also known as
An electrode is a component of an electric circuit that connects the conventional wiring of the circuit to a conducting medium such as an electrolyte or a gas. The electrically positive electrode is called the anode and the negative electrode the cathode. If an anode and a cathode are placed in a solution of an electrolyte and a source of direct current is connected between them, the positive ions in the
Electrical Engineers research, develop, design, and test electronic components, products, and systems for commercial, industrial, medical, military, and scientific applications (Cosgrove 749). They are concerned with devices that use small amounts of electricity that make up electronic components such as integrated circuits and microprocessors. By applying principles and techniques of electronic engineering they design, develop, and manufacture products such as computers, telephones, radios, and stereo systems (EGOE, 121). Electrical engineers touch everyone lives through the things they have designed or created. Electrical engineers have invented the lights in your house, the television, the stereo, the telephone, computers, and even your doctor’s blood pressure gauge (Stine 300).
A battery is a device that converts energy into electricity by storing electrical energy thru chemical reactions. In a battery, there are three major components [4]. The first component of a battery is a terminal called anode which is an electrode through which electric current flows into [2]. The second component of a battery is a terminal is called cathode which is an electrode through which electric current flows out [2]. These two terminals can be found at each end of a battery. The third component of a battery is called the electrolyte which is an ionic compound(s) that are used to separate these two terminals, send electrons and used to neutralize charges that build-up in the chemical reaction processes [2].