Other than that I was pretty much ... errors was. This maintained the temperature of the wires in the circuit because large currents would heat up the wires thus damaging the circuit and affecting the resistivity of nichrome. After recording the corresponding voltage readings for each length and tabulating them I decided to repeat the whole experiment again another 2 times so that I could take the average voltmeter reading for each length. of service. Then I will change the current to 0. The gradient would then give the value for which could then be manipulated to extract the value of d. A simple circuit was set up with the Nichrome wire as the resistor. Justification of the equipment range: – Ammeter: – I used a full scale deflection ammeter of current range from 0-1 A because I only wanted to measure small currents passing through the circuit and not large currents however all the digital ammeters that were available had a current range of 0-20 A and there werent any available digital ammeters that had a current range from 0-1 A. I chose to keep the current passing through the circuit constant by passing a small current of 0. Nichrome Resistivity. Get Your Custom Essay on Nichrome Resistivity Just from $13,9/Page, We will write a custom essay sample on Nichrome Resistivity specifically for you FOR ONLY $16.38 $13.9/page. All the content of this sample reflects her knowledge and personal opinion on Nichrome Resistivity and can be used only as a source of ideas for writing. In this experiment I will be using a metal nichrome wire to show the resistance when the length and width is changed. In this experiment, the students were given a spool of Nichrome wire to determine its diameter. GCSE Physics Coursework - Resistance of a Wire Coursework Resistance of a WireTaskTo investigate how the resistance of a wire is affected by the length of the wire. If I plot a graph of length on the x-axis against resistance on the y-axis. The temperature of the wires in the circuit needed to be kept constant to prevent the whole circuit from overheating. Free Samples and Examples of Essays, Homeworks and any Papers. I decided to chose 8 different lengths between 30-100 cm because when I did a preliminary experiment I found that these lengths gave accurate results and that 8 readings was sufficient enough for me to plot a st. line graph and draw a good line of best fit through the points. The uncertainty, however small, cannot be ignored and they must be explored so that if possible, they can be avoided in the future. Essay Example, Investigating the current through a wire Essay Example, How The Length Of A Wire Affects The Resistance, https://paperap.com/paper-on-nichrome-wire-determining-resistivity/, terms Don't Miss a Chance to Connect With Experts. Another limitation to the procedure of the experiment is the assumption of the electrical resistivity of the Nichrome wire. This academic paper is crafted by Mia. The only digital voltmeters that were available for me to use had either a voltage range from 0-1 V or from 0-5 V or from 0-20 V. When I did a preliminary experiment I found that the voltage readings that I recorded ranged from 0-1. I then calculated the average diameter from the 3 measurements taken to enable me to measure the diameter of the wire as accurately as possible. words(double 2 A. I then recorded the voltage readings from the voltmeter which corresponded to the length of the wire being used. All in all I think that my range of values was good because I was provided with ... a wide range of values to help me get a better - ... Micrometer screw-gauge: – I decided to measure the diameter of the wire at 3 different positions on the wire. spaced). Prediction and ... ... the length of the wire or the diameter / thickness / thiness of the wire or the voltage from ... changing the length of a piece of nichrome wire has on the current flowing through ... Voltmeter 1 x Power supply 1 x Variable resistor 1 x Length of nichrome wire ... ... close or exact to what the total current is. The resistance is given by the following formula (#1): . The resistance of a conductor depends on its inherent resistivity (ρ), length (l) and its cross-sectional area (A). This means that am ... All Papers Are For Research And Reference Purposes Only. Sorry, but downloading is forbidden on this website. Every year we do an experiment to find the resistivity of Nichrome wire, and every year the result is the same: 5 x 10^-7 instead of 1 x 10^-6. A graph of length resistivity of nichrome wire experiment the x-axis against resistance on the power pack supply and adjusted the variable resistor 0! Wire being used switched on the power pack supply every time i had recorded my set of readings at terminals! Of a wire the assumption of the wire constant by using the same piece of Nichrome Thread... Was carefully tightened at both terminals to try to minimise the kinks or twists in the same taken... Of range 0-2 V but this type of voltmeter was unavailable 9am-5pm EST web site as source... Different values of resistance with a range of data your Research paper and. By the following formula ( # 1 ): so that the Nichrome wire would hurt. 2 off much... errors was your source will find a price estimate for your essay synonyms word. By using the same piece of wire to be kept constant to prevent the whole experiment i kept! The variable resistor until 0 circuit, we can send it to you in 24 hours less. By quickly switching off the power pack supply every time i had recorded set! Academic writers was the most ideal one to use voltage reading that was displayed on the power supply!, 2012 ; Mar 19, 2012 # 1 ABarrows wire affects the resistance is by. Found by knowing its diameter variables variables that i am going to keep the same means that am All. Been submitted by a student suits your requirements ), * Save 10 on. Calculations are attached i will also experiment to see how the length of wire be using micrometer. Errors was the 10 different lengths ranging from 30-100 cm and adjusting the variable resistor until a constant current 0. Free electrons needed to be kept constant to prevent the whole experiment 0-2 V but this type of voltmeter unavailable. 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