and between which an electric current‚ I‚ will flow. The constant‚ R‚ is called the conductor ’s resistance. Thus by the Ohm ’s Law‚ one can determine the resistance R in a DC circuit without measuring it directly provided that the remaining variable V and I is known. A resistor is a piece of electric conductor which obeys Ohm ’s Law and has been designed to have a specific value for its resistance. As an extension of the Ohm ’s Law‚ two more relationship can be drawn for electric circuits containing
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The Red River Rebellion 1869 The Canadian government had bought Rupert’s Land from the Hudson Bay company. In addition‚ appointed the first English-speaking governor: William McDougall. McDougall had sent out surveyors to plot the land according to the square township system that was used in Ontario. The Metis‚ led by Louis Riel‚ prevented anti-French McDougall‚ to enter the territory when the unannounced surveyors had interfered. The Hudson Bay company was no longer in control of the territory
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(United States House of Representatives). Antibiotic resistance is when bacteria develops a different response to an antibiotic that is its ancestor bacteria. Slight changes in bacteria enable the antibiotic to work and successfully cause an infection without a remedy. The misuse of antibiotics is the number one cause of bacteria resistance to antibiotics (United States House of Representatives). I will talk about how bacteria develop antibiotic resistance‚ how it affects doctors and patients‚ and how to
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function of resistance. Also‚ we studied the current flow and voltage in series and parallel. Finally‚ the lab determined the equivalence resistance of series and parallel combination of resistors and compared the results with theoretical data. Theoretical Background: The first thing that needs to be described in this lab is what the electric current I: I =. The electric current is defined as charge over time and the unit is ampere (A). In a case where we have the voltage‚ resistance and current
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section is just a two-dimensional view of a slice through an object. An often asked question: How can you convert the diameter of a round wire d to the circle cross section surface or the cross-section area A (slice plane) to the cable diameter d? Resistance varies inversely with the cross-sectional area of a wire. | ------------------------------------------------- Top of Form | Wire diameter d | unit | | | Cross-sectional area A | unit2 | | | | | ↓ | | | | ↓
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unknown electrical resistance by balancing two legs of a bridge circuit‚ one leg of which includes the unknown component. Its operation is similar to the original potentiometer. It was invented by Samuel Hunter Christie in 1833 and improved and popularized by Sir Charles Wheatstone in 1843. One of the Wheatstone bridge’s initial uses was for the purpose of soils analysis and comparison.[1] ------------------------------------------------- Operation In the figure‚ is the unknown resistance to be measured;
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Biology Teacher Antibiotic Resistance Article Enduring Understandings: Natural selection is a driving force for evolution All living things share a common ancestor Diversity is beneficial for life on Earth Populations are constantly evolving Essential Questions: Why do I have wisdom teeth? Why don’t antibiotics cure all infections? Why are people taller around the equator than around the poles? TEKS: 6.E identify and illustrate changes in DNA and evaluate the significance of these changes 7.C
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more light hitting the LDR and so its resistance decreases and the light turns off. When it is night there is less light so the LDR has higher resistance and the light turns on. Explanation: When light shines on a Light Dependent Resistor‚ electrons are released and the current can get larger. So as the light intensity increases‚ more electrons are released and the resistance decreases. As the light intensity decreases‚ less electrons are released and the resistance increases. 2. Think about the research
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accurate graph. Analysis When the bulbs received more current the molecules in the bulb vibrated fast and the bulb became warmer as the resistance increased. As the voltage increased the current and resistance did also. The resistance of the 6V bulb increased as the current and voltage did. However‚ in the pure resistor trial experiment the resistance stayed around the same as the current and voltage increased. The difference between the bulbs and trial experiment graphs are that
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IS GENETICALLY MODIFIED FOODS REALLY SAFE AS WE THINK ? Since the beginning of life‚ nourishment is the first requirement for all kind of alive. According to Chassy (2007)‚ early humans lived a hunter gatherer lifestyle and that around 10000 years ago they started to transition into an agricultural lifestyle. Also they feed animals to their milk‚ meat and eggs. Later‚ some people interested in agriculture in order to survive and earn money. In today’s world‚ technological developments
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