Potatoes May Power The Batteries Of The Future Friday‚ June 18‚ 2010 - by Ray Willington Oh‚ batteries. Can’t live with ’em‚ can’t live without ’em. It sounds like a power ballad‚ but it’s the story of our lives around here. We’ve been dealing with lofty promises and batteries that kick the bucket far too early‚ for years now. And the fact that we’re still dealing with lead-acid batteries is sort of a baffling thing to wrap one’s mind around. But all of that just might be changing. We won’t get
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to use the variables in an electrical current. Knowing how the variables are used in calculations and electrical currents is important in determining the value of the resistor and how it affects the current in the circuit. A device known as the multimeter is used to find the voltage and current in the circuit. Ohm ’s principal discovery was that the amount of electric current through a metal conductor in a circuit is directly proportional to the voltage impressed across it‚ for any given temperature
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A:1) Fundamental of basic electrical instrument Objectives: Operate basic electrical laboratory tools (oscilloscope‚ function generator‚ DC power supply). Determine transistor type (NPN‚ PnP)‚ terminals‚ and material using digital multimeter. Graph the collector characteristics of a transistor using experimental methods and determine. Determine the value of the alpha and beta ratios of a transistor. Construct series and shunt voltages regulator configurations. Calculate and measure
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heating a small amount of a solid substance at a very high temperature. Tripod = It is a three-legged stand that supports the wire gauze while heating. Microscope = It is used for viewing the ultra minute objects by the process of magnification. Multimeter = It is used for measuring the current‚ voltage and resistance. Here are a few examples: 1. beaker = a liquid measuring container 2. burette = measures volume of solution 3. clay triangle = a wire frame with porcelain used to support a crucible
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What is a Resistor? An electric resistor is a two-terminal passive component specifically used to oppose and limit current. A resistor works on the principle of Ohm’s Law which states that voltage across the terminals of a resistor is directly proportional to the current flowing through it. Ohm’s‚Law: v=IR where V is the voltage applied across resistor‚ I is the current flowing through it‚ and R is the constant called resistance. The unit of resistance is ohms.
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Abstract The makers of sports drinks spend millions of dollars advertising the benefits of their products. One of these featured benefits is often electrolytes‚ which your body loses as you sweat. In this chemistry science fair project‚ you will compare the electrolytes present in a sports drink with those in orange juice to find out which drink has more to replace the ones you lose as you’re working out or playing sports. When you are finished‚ you might even want to make your own sports drink
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Objective In this experiment‚ you will experimentally verify Kirchhoff’s rules by measurement and by mathematical analysis. Apparatus (Lab Kit* or NIC Lab) 5 resistors one 6V battery or power supply (each under 1.5 kΩ each‚ not all equal) digital multimeter 12 connecting wires *If you do not have the Lab Kit‚ you can use equivalent items. Contact your instructor regarding equivalent items to ensure that the objective of this experiment is maintained. Introduction The most basic of electrical circuits
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2. 2 units of Multimeters (mA Ammeter‚ Voltmeter) 3. Variable resistors (50 (‚ 100 (‚ 1 k(‚ 5 k() 4. Retort stand 5. Xenon Lamp (Solar simulator) 6. DC power supply 7. Wires Experimental Procedures 1. Set the first mulitmeters to mA for it to function as ammeter and set the second multimeter to V for it to
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designed to allow the learners to get involved and learn something new. My practical exercise consisted of injector testing and the use of a Multimeter‚ I split my learners into groups of 3 and gave them a short exercise on how to set up the Multimeter and which setting was required. I did this by first showing them what to and then letting them set up the Multimeter in their groups with me assessing they had done it correctly. The second part of the exercise was to carry out injector testing and record
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In addition to that in the first part of the experiment our aim is to read color codes of resistors and get idea about how to use multimeter for resistor measurements. In the second part of the experiment our aim is to see the operation of function generator and DC voltage source‚ how to use multimeter to measure AC and DC voltage and how to use multimeter to measure AC and DC current. After completing these parts our aim is to see the operation oscilloscope and analyze simple circuits
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