Industrial and hobby hot-wire foam cutters use nichrome wire. Typically, nichrome is wound in coils to a certain electrical resistanceand when current is passed through it the Joule heating produces heat. There are possible sources of error that might have led to inconsistent results, such as a kink in the wire.
You may improve this articlediscuss the issue on the talk pageor create a new articleas appropriate. This Nichrome wire coursework reduce the chance of false readings and will cancel out any anomalous results. Uses[ edit ] Almost any conductive wire can be used for heating, but most metals conduct electricity with great efficiency, requiring them to be formed into very thin and delicate wires in order to create enough resistance to generate heat.
I could have considered using a new piece of wire each time in order to regulate the temperature more stringently. The alloy price is controlled by the more expensive nickel content.
Overall, I think my method was sufficient to obtain reliable results. Below is a table illustrating the effect of changing the variables see Nichrome wire coursework 2: To support my prediction and conclusion, I could do further experiments.
This was because I could plot a graph and show the general trend. September Learn how and when to remove this template message Nichrome alloys are known for their high mechanical strength and their high creep strength.
However, using new pieces of wire each time would have been too impractical and time-consuming in the context of this lesson. However, I made sure that the wire remained straight throughout the experiment. This would have prevented the area of the wire from remaining constant and would have affected my results.
I think my method could have been improved to produce results that were even more consistent. Using the same piece of wire throughout the experiment meant its temperature rose slightly over time, which may have affected my results. I have taken three reading and have worked out the average, shown in red.
I will also ensure that there is a clear indication that the power is isolated by means of a switch and an L. Results Below is a table of my results Table 3. Because of its low cost of manufacture, strength, ductility, resistance to oxidationstability at high temperatures, and resistance to the flow of electrons, nichrome is widely used in electric heating elements in applications such as hair dryers and heat guns.
Also, the apparatus I had use Nichrome wire coursework at school would not be suitable if I were to keep increasing the length of the wire; e. Other areas of usage include motorcycle mufflersin certain areas in the microbiological lab apparatus, as the heating element of plastic extruders by the RepRap 3D printing community, in the solar panel deployment mechanism of spacecraft LightSail-Aand as the heating coils of electronic cigarettes.
Any variations are due to different percentages of nickel or chromium. This confirms the first part of my prediction: Nichrome wire is used for its ability to withstand the high temperatures that occur when clay work is fired in a kiln.
Variables Safety I will ensure experimental safety by confirming that all the wires are connected properly and that none of the insulation on the wires is worn.
Variables There are different variables that can be changed in this experiment; these are the independent variable. Apparatus Ensuring Accuracy To ensure accuracy I will record the voltage and the current three times every 5cm and take the average reading.
However, I think that unless I had specialist equipment the results would be distorted because the wire would eventually get very hot. I will also control, using the power pack, how many volts pass through the wire.
Again, I will record the voltmeter and ammeter readings and turn off the power pack. Nichrome is used in the explosives and fireworks industry as a bridgewire in electric ignition systems, such as electric matches and model rocket igniters. Graph Graphing these results shows a nearly straight line, illustrating a strong positive correlation between length and resistance, which is consistent with my prediction.
There are a few data points that are farther away from the line of best fit than the others, but they are still consistent with the general trend.
I will switch off the power pack, move the crocodile clip that was at 5cm up to 10cm, and switch on the power pack. I will also ensure that the wire does not heat up too much by confirming that I do not set the voltage too high on the power pack and by maintaining the same the voltage for every reading.
The variables I will control will be the type of wire resistivity and the cross-sectional area of the wire. When heated in air, most metals then oxidize quickly, become brittle, and break. Discussion Overall, my results are very consistent with my predictions.Nichrome Wire Feet, 23 Gauge TEMCo Nichrome 60 series wire 30 Gauge Ft Resistance AWG ga out of 5 stars 9.
$ Nichrome 80 - ' - 26 Gauge Resistance Wire out of 5 stars 3. $ Next. Customers also shopped for. Page 1 of 1 Start over Page 1 of /5(1).
Find great deals on eBay for nichrome wire. Shop with confidence. Apr 19, · An investigation into the resistance of a wire. Free GCSE physics coursework essay. MORE.
Sign In Join. cm nichrome wire; Method. First, I will collect the apparatus I need and set it up as shown in Diagram 1, below. Next, I will set the power pack on the lowest voltage possible to ensure that the current passing through the circuit Reviews: Nichrome (NiCr, nickel-chrome, chrome-nickel, etc.) is any of various alloys of nickel, chromium, and often iron (and possibly other elements).The most common usage is as resistance wire, although they are also used in some dental restorations (fillings) and in a few other applications.
Lightning Vapes Nichrome 80 Resistance wire is perfect for rebuilding your atomizer, and especially good for sub ohm coil builds.
It has a lower resistance per length compared to kanthal, which means that it will heat up noticeably faster and is a preferred alternative to kanthal for many cloud chasers for this reason.5/5().
Nichrome wire is commonly used as a resistance heater for cutting foam (Styrofoam, polyurethane, etc.) fabrics, and a variety of other materials. Nichrome wire (NiCr60 Type Alloy Nickel Chrome Alloy).Download