A piece of nichrome wire has the radius of 65x10-4m it is employed in a laboratory to make a heater which employs 400x102 w of power when connected to a voltage source of 120v ignoring the effect of temperature on resistance, estimate the length of the wire. What affects the resistance of a piece of wire - sample essay we could see how temperature affects resistance, although, one would need to have done a constantan. A piece of nichrome wire has a radius of 61 x 10-4 m it is used in a laboratory to make a heater that dissipates 490×102 w of power when connected to a voltage source of 140 v ignoring the effect of temperature on resistance, estimate the necessary length of wire. The resistance of a typical conducting wire is low when temperature is low and high when temperature is high the increase in resistance alongside temperature is due to an increase in energy of the wire atoms, which cause them to vibrate more and impede the path of the electrons flowing through a. Essays related to practical investigation - air resistance to a falling object that affect the resistance of a piece of wire before commencing my investigation, i.
Dciiinger] temperaturecoefficientofcopper 75 peraturemeasurementsdidnothavetobemadewithgreataccu- racythetemperaturesusedinthesecomparisonswerebetween 20°cand50°c. Resistance: temperature coefficient since the electrical resistance of a conductor such as a copper wire is dependent upon collisional proccesses within the wire, the resistance could be expected to increase with temperature since there will be more collisions, and that is borne out by experiment. A piece of thin wire has higher resistance than a piece of thicker wire with the same length, which means that it's harder for electric current to move through it if you use the same battery but replace a thick wire with a thinner one, the electric current will get smaller and a light bulb in the circuit should get dimmer.
A guide to resistance measurement senses the ambient temperature and the resistance reading is corrected to a reference temperature of 20°c copper wire has. Free resistance of wire papers, essays, is about how a piece of wire can affect the resistance i'm trying to find out, if the resistance will change and why if. Free college essay resistance of a piece of wire planning in this piece of coursework, i am going to investigate what affects the resistance of a piece of wire.
An essay or paper on electrical resistance: an overview resistance, in electricity, is a property of any object or substance to resist the flow of an electrical current the quantity of resistance in an electric circuit determines the amount of current flowing in the circuit for any given voltage applied to the circuit. Circuits & resistors • describe the effect of temperature on the resistance of a conductor resistance present in a piece of the material of standard. A wire of resistance r is stretched to double its length is it resistant what will be the effect on drift velocity if we stretch the wire to double its length. Resistance of a wire this study guide resistance of a wire and other 64,000+ term papers, college essay examples and free essays are available now on reviewessayscom autor: review • december 4, 2010 • study guide • 650 words (3 pages) • 743 views. How to find resistance of a wire using ohm's law to properly set up a circuit to test the resistance of a wire, a breadboard is a piece of plastic with many.
To investigate how the resistance of a wire is affected by the length of the wire to read essay to investigate how the resistance of a what affects the. For reasonably small changes in temperature, the change in resistivity, and therefore the change in resistance, is proportional to the temperature change this is reflected in the equations: at low temperatures some materials, known as superconductors, have no resistance at all. Resistivity and laws of resistance , electrical resistance r of a conductor or wire is where, ρ the temperature of the substance also affects the resistance. Predict how changing each variable will affect the resistance 2ª lei de ohm no resistance in a wire (html5) artur araújo cavalcante e gilvandenys leite sales.
The resistivity can therefore be calculated quite easily be measuring the resistance of a piece of wire of constant cross-section and known length in practive resistivity is difficult to measure accurately because of the effect of temperature. And clarification of basic electrical safety for individuals who have electricity is produced when a magnet is moved past a piece of wire the resistance.
Essays related to the effect of length on the resistance of the wire if the wire is longer it needs more force to get the electrons through the long piece of. Factors affecting the resistance of wire 1883 words | 8 pages 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. In this case, the temperature of the wire is a factor which affects measurements of its resistance discuss how this can be taken account of one approach is (as discussed above) to keep the wire at a constant temperature by immersing it in a water bath. Immediately download the electrical resistance summary, chapter-by-chapter analysis, book notes, essays, quotes, character descriptions, lesson plans, and more - everything you need for studying or teaching electrical resistance.