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Measurement of the resistivity of Nichrome
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- Words:
- 2614
- Submitted:
- Thu Aug 20 2009
- Mark submitted by Author:
... Measurement of the Resistivity of Nichrome (NiCr) Introduction In this coursework, I am going to measure the resistivity of Nichrome. Nichrome is a non-magnetic alloy of nickel and chromium. It is a good conductor of electricity and heat, and has a high melting point. Due to its relatively high resistivity and resistance to oxidation at high temperatures, the wire made of Nichrome is widely used in heating elements, such as in hair dryers, electric ovens and toasters. What does Resistivity mean? Resistivity (also known as electrical resistance) is a measure of how strongly a material opposes the flow of electric current. It is normally static and could be varied by changing the temperature. In general, resistivity of metals increases with temperature, while the resistivity of semiconductors decreases with increasing temperature. High values of resistivity imply that the material making up the wire is very resistant to the flow of electricity. Low values of resistivity
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