R = Rₒ(1 + α(T-Tₒ))

The temperature coefficient of resistivity represented by the symbol α; defines the change in resistance due to a change in temperature, as per the following formula: *I kept the current flowing through the circuit constant using a variable resistor which I kept varying for each length of wire so that the ammeter would always read 0.2 A. "h I am going to only use a voltage of 2 volts. Working independently and alongside professors at Goucher College, they have produced and taught a number of educational programs and workshops for high school and college students in the Baltimore area, finding new ways to connect students to biology, psychology, and statistics. To Measure the Resistivity of the Material of a Wire Diagram Apparatus • Nichrome wire at least 1 m long. Conclusion: Measuring The Temperature Of The Wire This website uses cookies to improve your experience. This would also apply to this investigation where we have uncertainties to the readings taken. I considered that it just might have a low value, but everything I've been able to find says Nichrome's resistivity varies from 1.0 x 10^-6 to 1.5 X 10^-6, so I doubt there's a composition variety with 0.5 x 10^-6 as its resistivity.

Electrical Resistivity at room temperature: 1.0 x 10, Temperature Coefficient of Resistivity (25.

Search for your essay title... An experiment to find the resistivity of nichrome, Investigating the resistivity of an unkown wire, An Investigation to Find the Resistivity of Wires, Determination of the resistivity of nichrome wire, Join over 1.2 million students every month, Unlimited access from just £6.99 per month. Resistivity of Nichrome experiment Thread starter ABarrows; Start date Mar 19, 2012; Mar 19, 2012 #1 ABarrows. » Nichrome A (or NiCrA) Tags chemistry Chromel Chromel C flame testing fusing nichrome wire glass fusing hot wire cutters Hot wire foam cutters inconel Kanthal nichrome 60 Nichrome A Nichrome C nichrome wire Nickel based superalloys NiCrC nicrome wire … Following are some of the other physical properties of nichrome. 2. Heating With A Constant Current Supply - the resistivity depends strongly on the presence of impurities in the material. If the wire is heated up the atoms in the wire will start to vibrate because of the increase in energy. Log in now! The α for nichrome is much lower than that for most common metals. It resists heat and oxidation and serves as a heating element in products such as toasters and hair dryers. 1) Note!

ρ = resistivity or resistance per unit length. The wire will get longer as it gets hotter – about 1% longer for every 700°C of temperature rise. Again this resistivity for the 28 gauge in comparison to the resistivity for the 32 gauge is the same, where very small decimal places are slightly out. Tough GCSE topics broken down and explained by out team of expert teachers, Learn the art of brilliant essay writing with help from our teachers, Get your head around tough topics at A-level with our teacher written guides, Start writing remarkable essays with guidance from our expert teacher team, Understand the tough topics in IB with our teacher written Study Guides, Learn the art of brilliant essay writing from our experienced teachers, Struggling with an assignment?

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