Factors affecting the resistance of a wire Introduction: Resistance is a force‚ which opposes the flow of an electric current around a circuit. Resistance is measured in Ohms. George Ohm discovered that a circuit sometimes resists the flow of electricity. He called this ’RESISTANCE.’ He even came up with a rule for working out the resistance of a circuit‚ which was: R= V ÷ I V- Volts I- Current R- Resistance Ohms law says the more resistance means more energy is needed for the current to
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Aim: To investigate the factors that affect the resistance in a conductor. The main factors that affect the resistance in a conductor are: · Length · Temperature · Cross sectional area · Material · Magnetism The factor that we are going to change is the cross sectional area. Hypothesis: I think that the higher the cross sectional area‚ the lower the resistance in the conductor will be. This is because the Resistance in a metal conductor happens because as the electrons move through the material
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ENGR. JAY S. VILLAN‚ MEP-EE Introduction A multitester or multimeter is a device which can be used to gather data about electrical circuits. A basic multitester can measure resistance‚ voltage‚ and continuity; while more advanced versions may be able to provide additional data. This tool can be very useful to have around the house‚ and anyone who plans on doing electrical repairs should most definitely use a multitester for safety reasons. Multitesters can be used with the current off or on in
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Factors Affecting Resistance of Pencil Lead Abstract: The investigation involved testing the factors of pencil lead length‚ cross-sectional area‚ temperature and lead type to find out how they affected pencil resistance. The hypothesis was proven as the length (series circuit) graph was exponential and the area (parallel circuit) graph was that of a power function. Higher clay based pencils (2H) had higher resistance to that of higher graphite based pencils (6B)‚ and temperature
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Physics Coursework- Ohm’s Law Aim: To investigate the factors of affecting the resistance of a wire. In this experiment I will be using a metal nichrome wire to show the resistance when the length and width is changed. Variables Variables that I am going to keep the same. Variables that I am going to change. Width- 0.36mm2 Material- Nichrome wire Voltage- 2V Temperature- Room Temperature Length- 10cm‚ 20 cm‚ 30cm‚ 40cm‚ 50cm Material- Nichrome Length- 50cm Voltage- 2V Temperature- Room
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Development of the Metal Foam Electrical Resistance Heater. (Under the Direction of Dr. Albert Shih.) This thesis presents a novel concept using a radial heating element made from porous Fe-Cr-Al metal foam in an air heater. Electrical resistance heating has been used extensively to convert the electrical energy into thermal energy. An analytic heat transfer model is first developed to estimate dimensions of the heating element. Four prototype Fe-Cr-Al metal foam electrical heaters with different
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FACTORS AFFECTING GROWTH & DEVELOPMENT FACTORS AFFECTING GROWTH & DEVELOPMENT In this assignment is an explanation of genetic‚ biological‚ environmental and socio-economic and lifestyle that effect the development of an individual. Also using the case study of Emily there is explanation on 2 predictable and 2 unpredictable life events that could be affecting her now and the in the future. I will then be discussing the 2 sides to the nature –nurture debate‚ and then I will be evaluating how
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Rome-Italy Vol. 3 No. 3 September 2013 89 Factors Affecting the Study of Accounting in Nigerian Universities Odia‚ J.O. (PhD) Department of Accounting‚ University of Benin‚ Benin City‚ Nigeria odiajames@yahoo.com‚ 234-8056580011 Ogiedu‚ K.O. (PhD) Department of Accounting‚ University of Benin‚ Benin City‚ Nigeria koogiedu@yahoo.com‚ 234-8033600045 Doi:10.5901/jesr.2013.v4n3p89 Abstract This paper examines the factors affecting students ’ career choice of accounting in Nigerian
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which factors affect the resistance of a conductor‚ and the mathematical relationship that exists between these variables. Hypothesis Copper wires would be a better conductor than nichrome wires because it would yield less resistance when they have same cross-sectional area‚ length and temperature. Resistance would be increased when length wires increased. Resistance would be increased when cross-sectional area of wires decreased. Resistivity of wires is a factor of affecting the resistance. Background
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What factors affect the resistance of a piece of wire? What I am going to investigate is‚ what factors affect the resistance of a piece of wire. To start this experiment I will need the following equipments: Power pack Ammeter Voltmeter 1 meter ruler (100cm) 110cm of wire Crocodile clips This shows how the equipment will be set up. A V I will measure the Voltage and also Current of the wire. Once I have recorded the results
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