Coursework - Resistance of a Wire Coursework Introduction (Theory) In this piece of Coursework I am going to investigate the resistance in a piece of wire. Resistance is the force that slows down the flow of electrons; this can be due to electrons colliding. The total length of the wires will affect the amount of resistance. The longer the wire‚ the more resistance that there will be. This is also true for thickness of wire; the thinner the wire is the more resistance. Resistance is measured
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increased risk of cardiovascular disease and type 2 diabetes. There are five major factors to look for; out of these five a person only needs three to be diagnosis with metabolic syndrome. They are obesity‚ mainly that of the waistline‚ insulin resistance‚ hypertension‚ dyslipidemia‚ and systemic inflammation. Once a person has three or more of these a medical professional can take the necessary steps in order to begin treatment. Allowing an improved and more efficient way to help patients that are
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Neeru2012-10-23T12:15:00 CLASS 10 ELECTRICITY 1. How much current will an electric heater coil draw from a 220 volt line‚ if the resistance of the heater coil is 40? (1 Mark) (Ans) Given‚ R= 40‚ V=220 V We have the relation‚ I = V/R = 220/40 = 5.5 A 2. What is electric current? (1 Mark) (Ans) The rate of flow of charge per unit time through a conductor is called electric current. 3. What is the SI unit of electric current? (1 Mark) (Ans) The SI unit of electric current is ampere
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the time it takes for the parachute to fall also increases. This is because the air resistance is larger‚ therefore the drag is increased. So the speed of the parachute decreases. This is because the forces (air resistance and gravity) are unbalanced. The change in air resistance is important because the larger the surface area of the canopy‚ the more air particles it is ‘hitting’; therefore the air resistance is bigger. Variables: In our investigation‚ the variable that we
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The purpose of this lab is to successfully infiltrate E. coli bacterial cells with a pARA-R plasmid that is antibiotic resistant and has the rfp gene‚ or red fluorescent protein. This can be verified if the E. coli obtains the characteristics of the plasmid when it enters. To start‚ three Petri plates containing agar are needed. On each plate there is a control group and a treatment group; the treatment group being the one with the plasmid. Before the plasmid is put with the E. coli‚ first the bacteria
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Problems with Antibiotic-Resistant Bacteria Antibiotic-Resistance is the ability of bacteria and other microorganisms to resist the effects of the antibiotics they were once sensitive towards (MedicineNet.com‚ 2012). People have been prescribed antibiotics for years to prevent‚ reduce or eliminate infectious diseases. This consumption of these antibiotics has caused our bodies to become resistant towards treatment. Rise of Antibiotic-Resistance When a person goes to the doctor for treatment and are
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bacteria. The characteristics of bacteria are altered from an external source to allow them to express a new trait‚ in this case antibiotic resistance. In is experiment foreign DNA is inserted into Escherichia coli in order to alter its phenotype. The goal of the experiment is to transform E. coli with pGLO plasmid‚ which carries a gene for ampicillin resistance‚ and determine the transformation efficiency. The bacteria are transformed by a combination of calcium chloride and heat shock. When the bacteria
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Name _____________________ Battery‚ resistance‚ and current – Lab 17 Go to http://phet.colorado.edu/en/simulation/battery-resistor-circuit and click on Run Now. Batteries‚ Resistance and Current “Battery-Resistor”: Check “show battery” and “show cores”‚ watch what happens‚ adjust some variables 1. Why do electrons (blue dots) move? Draw a diagram of the battery‚ label the flow of electrons. The flow of current (+) is opposite; draw this and note if toward or away from + terminal
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parallel circuits. The laws on series and parallel resistors‚ as well as the color code for resistors were observed to calculate the total resistance. The proper connection for ammeter and voltmeter was also conducted and the readings for the voltage and current were obtained. 1. Introduction The objectives of the experiment are to determine the resistance of a resistor based on its color code and to verify the laws on series and parallel resistors‚ as well as the cells. Some practical applications
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results of his experiments‚ Georg Ohm was able to define the basic relationship between voltage‚ current‚ and resistance. The equation I = V/R is known as "Ohm’s Law". It states that the amount of steady current through a material is directly proportional to the voltage across the material divided by the electrical resistance of the material. The ohm (R)‚ a unit of electrical resistance‚ is equal to that of a conductor in which a current (I) of one amp is produced by a potential of one volt (V) across
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