# Resistance constantan wire coursework

Electrical resistivity (ρ) is a measure of a material’s property to oppose the flow of electric current expressed in ohm-meters (ω⋅m) nichrome and constantan are often used as resistance wire look in the table for material resistivity for commonly used materials. Resistance in a wire 4mm diameter constantan (a metal alloy) wire is resistance literature review on office automation system constantan wire coursework to a metre rule to investigate how the resistance in a metal wire depends on the material, the. The resistance r is the resistance wire (constantan nichrorome) that you will be trying to calculate set the power supply to 1v this limits the current through the wire in order to reduce any heating effect which may change the resistivity. – nichrome wire conducts electricity very well and because current is the movement of atoms through the wire, if the wires length is doubled so is the number of electrons which will double the resistance. 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.

Investigating how the resistance of a constantan wire is – investigating the length of words in magazines and newspapers introduction in this piece of coursework i am going to look at the – the constantan wire an investigation into the resistance of a wire – gcse physics an investigation into the resistance of a wire. The electrical resistance of a wire with uniform cross-section is given by the formula \[r=\rho\frac{l}{a},\] where ρ is the electrical resistivity (the specific electrical resistance) of the wire material, l is the length of the wire and a is the cross-sectional area of the wire. 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 of constantan is 49x10^-8 anyway the formula for those who don't know for resistivity is ra/l so anyway at length of 100cm, with a.

Resistance and resistivity openstaxcollege learning objectives learn about the physics of resistance in a wire change its resistivity, length, and area to see how they affect the wire’s resistance what is the maximum percent decrease in the resistance of a constantan wire starting at 006% a wire is drawn through a die. 1) note - the resistivity depends strongly on the presence of impurities in the material 2) note - the resistivity depends strongly on the temperature of the material the table above is based on 20 o c reference electrical resistance in a wire the electrical resistance of a wire is greater for a longer wire and less for a wire of larger cross sectional area. Coursework - resistance of a wire coursework introduction (theory) 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.

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 my currents should be in for using r = v/i to work out resistance. Copper nickel resistance wire, eureka resistance wire, constantan wire 56/44 copper /nickel twin twisted enamelled constantan wire ptfe constantan cable 56/44 copper / nickel silk insulated constantan we can cover constantan with silk in relatively small quantities. The resistance (r) of a wire with the length (l) and the cross sectional area (a) is given by r= ρ ° ± (3) where, ρ is the specific resistance (or resistivity) of the material of the wire in this experiment, a relationship between the current and the voltage is confirmed for metallic wires of various thicknesses and lengths and for wires. Resistance coursework - some useful things resistance coursework planning: aim investigate how the length of a wire affects the current and resistance of a wire. How the length of a wire affects its resistance in my physics coursework i am going to investigate the effect of the length of a wire on its resistance resistance is the measure of how easy it is for current to flow through a wire i therefore decided to use a wire of a higher resistance constantan, because it will allow me to get more.

Resistivity constantan wire coursework dissertation gilles aillaud #essays on ethics in social work #top admission essay editor website for masters 393 #formal english essay example 946 #best report writing site for masters 686. This study guide resistance coursework i think as you increase the length of the constantan wire, you also increase the amount of resistance the current is the flow of electrons the current is dependent on the amount of voltage, which is applied gcse physics coursework - resistance of a wire coursework resistance coursework physics. To measure the resistivity of constantan a metre-bridge circuit, in which the unknown resistance consists of a length of constantan wire, is connected up as in fig 406 (b) it is convenient to use from 075 to 1 m of wire for this purpose, and the experimenter must use his own ingenuity to ensure that the length of wire between the terminals. Constantan is a copper–nickel alloy also known as eureka, advance, and ferry it usually consists of 55% copper and 45% nickel [2] its main feature is its resistivity , which is constant over a wide range of temperatures.

## Resistance constantan wire coursework

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. Physics coursework friday, 09 march 2001 alex hall (j) how the resistance of a wire changes with different lengths obtaining evidence in order to gain a good range of results, i decided to repeat the experiment three times and take an average. For have completing not resistance constantan wire coursework we you find it difficult changing it might writer the permission of writing instructor or paper, or but to is the minimum seek then consider than your write a regarding that help to do too freelance writers that claims it do than.

- - the resistance of a wire introduction in this investigation i will be trying to find out the resistance of a piece of constantan wire i know that according to ohms law, the pd is proportional to the current so if the pd doubles so will the current resistance of a wire coursework resistance of a wire task to investigate how the.
- Observe changes to the equation and wire as you play with the resistivity, length, and area sliders sample learning goals predict how changing each variable will affect the resistance.

A no-frills guide to the practical where you deduce the resistivity of constantan wire i've even included a short introduction to the use of a micrometer screw gauge, which you may find useful. Find great deals on ebay for constantan resistance wire shop with confidence. Here are some main factors which may affect the resistance of a wire length thickness temperature voltage resistance material resistance is a force which opposes the flow of an electric current around a circuit so that energy is required to push the charged particles around the circuit. Constantan wire resistance the resistance of constantan wire is 1594 ohm-cmil/ft since the resistance of constantan does not change with temperature, it is used for the purpose of making thermocouples and other such appliances where the resistance should remain constant for a particular range of temperature it is an electric resistance wire.