Physics coursework resistance vs length resistance of a wire aim my aim in this investigation, we will be studying the resistance of a wire and to find. Negative constantan wire is recommended for reducing atmospheresthe operating range for this alloy resistance to oxidation and corrosionhowever, hydrogen, carbon and many metal vapors can contaminate a platinum-rhodium thermocouplethe recommended. Unless otherwise stated this page contains version 10 content (read more about versions) 262 resistance alloys and wire resistances copper-manganese alloys (~84% cu, 12% mn with nickel, aluminium or germanium as the remaining constituent) these alloys are sold under various proprietary names, and manganin, the pioneer alloy of this. Resistance in a wire free essay example: how the resistance of a wire is affected by its length this investigation will determine how changing the length of the wire, when passing an electrical current through it, will effect its resistance. I am currently doing my gcse physics coursework and im stuck on what temperature actually does to resistance please help :) how does temperature affect resistance higher the temperature the how does the temperature of a wire affect its' resistance as the temperature. Ok doing some physics coursework at the moment where i have to measure the resistivity of constantan anyway, for those who don't know, the resistivity. When resistance wire is used for heating elements (in electric heaters, toasters, and the like), high resistivity and oxidation resistance is important constantan [cu55ni45] has a low temperature coefficient of resistivity and as a copper alloy. Resistance of a wire (physics) coursework watch announcements i'm doing a physics coursework on the resistance of a wire: im not sure which material to use to measure the length oh i see lucent so what do you think i should use constantan rather than nichrome.
Resistance of constantan wire the current in a wire is due to the motion of free electrons within the wire these electrons are not bound to any particular atom but are free to 'wander' through the body of the material. Thermocouple wire sizes, resistances, and weights 7-15 section 7 0009 0015 0022 0035 0055 0033 0138 0220 0560 constantan type t copper / constantan type j iron / constantan009054263380158 thermocouple wire size and resistance table resistance in ohms per double foot at 68. How the length of a wire affects its resistance in my physics coursework i am going to so i then can work out the resistance i will be using constantan wire starting of with 1m this first report in physics will show the investigation of how the length of a wire affects its resistance. What should be the resistance of constantan wire over a meter at room temperature if the thickness is 26 i've just done my physics coursework and my reading was 19876 ohms, but my teacher's told me to find out what it should be many thanks. These are the results from our small experiment -: length (cm) current (amps) potential difference (voltage) resistance = v (2d p ) i constantan 20cm 10cm rass a custom essay sample on resistance of a wire coursework. Resistance of a wire investigation extracts from this document would cause a higher resistance as explained previously however, it is now known, after researching the metal alloy constantan, that the resistivity physics gcse coursework:factors affecting the resistance of a wire.
The resistance of a wire the amount of extra resistance cannot be estimated and will have changed during the course of the investigation constantan wire was selected for the investigation because its resistance does not change very much as the temperature changes. Electrical resistivity nichrome and constantan are often used as resistance wire look in the table for material resistivity for commonly used materials sheet resistance the resistance value for a sheet is calculated the exact same way as for wire resistance.
Physics coursework theory resistance of a wire current when the length of wire changes, so i then can work out the resistance i will be using constantan wire starting of with 1m length and then decreasing it by 010m intervals down to 020m long. Schedule of fees for short courses approved october 2014 mandatory courses calendar 2017. Wire resistance essay examples 13 total results wire conductivity testing of copper, iron, constantan and nichrome wires 911 words the length of a constantan wire and the resistance 438 words 1 page an overview of the experiment, the resistance of a piece of wire 2,609 words.
Senphus is nicr-cuni thermocouple wire provider in china the nicr-cuni (constantan) thermocouple wire provides higher emf output, better sensitivity, stability and oxidation resistance than similar cu-constantan and fe-constantan products with a wide operating temperature range from -200 to 900 ℃, the product maintains good anti-corrosion. Thermometer physical principles thermal expansion bimetalic o dial thermometer resistance temperature devices o rtds (resistance change in a metal) o thermistors (resistance change in a illustrated using iron-constantan wire the following figures illustrate more complex circuits.
Physics coursework resistance of a wire prediction an investigation into the resistance of a wire - gcse physics free gcse physics coursework essay an investigation into the resistance of a wire - gcse physics coursework prediction. Constantan resistance, copper wire, resistance decade, iron wire, chrome nickel wire, nickel wire, etc. Constantan is a metal alloy made of 45 percent nickel and 55 percent copper constantan wire is used chiefly in electrical instruments and and other equipment which can take advantage of its unusual physical property which is that, even over wide variations in operating temperature, its electrical resistance stays at an almost constant value.
Resistance and resistivity learning objectives by the end of this section assuming a constant temperature coefficient of resistivity, what is the maximum percent decrease in the resistance of a constantan wire starting at 200ºc 12 a wire is drawn through a die. Find great deals on ebay for constantan wire and manganin wire shop with confidence. Measuring the resistivity of a wire 1 piece of resistance wire, 110 cm long this can be constantan wire (sometimes known as eureka wire) the resistance wire must be checked to ensure that it does not become too hot when 10 cm. This coursework gcse physics coursework - resistance of a wire coursework and other 63,000+ term papers, college essay examples and free essays are available now on reviewessayscom one metre length of 04mm diameter constantan (a metal alloy) wire is fixed to a metre rule. Code: constantan(cuni44) material: cu-ni heating wire specifications: φ01mm~φ90mm features: copper-nickel alloy wire resistance is low, is widely used in low-voltage electrical appliances, electrical machines, wound resistors, instrumentation and other fields.
Cpmorg homework help gateway science suite biology, chemistry and physics candidate style answers version 1 october 2011 wwwocrorguk/science wuthering heights essay questions and answers specimen general certificate and calculating the resistance of a wire (p4c) selection of eureka wire (also known as constantan or contra) of different. Hey, so i'm doing a practice assignment on resistance in differing thicknesses of a 1m length of constantan wire the thing is, i don't know what range. So i then can work out the resistance i will be using constantan wire starting of with 1m length and then decreasing it by 0 constantan wire 1m voltmeter theory of length of wire objective for this piece of coursework i have been asked to investigate into the resistance of. How the length of a wire affects its resistancein my physics coursework i am going to investigate the effect of the length of a wire on its resistance i therefore decided to use a wire of a higher resistance constantan.