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Defining the Resistivity of Nichrome Plan The internet site (http://mst-online.nsu.edu/mstonline/electronic/electronic2.htm) defines resistivity (or volume resistivity) as the term used to describe the relationship between electric current and the applied electric field. It is a measure of the resistance to the flow of current from a microscopic level, that is, as explained in terms of the atoms, the basic building blocks of all solid materials. The resistivity, r (Greek letter rho), depends on the behaviour and number of free, or conduction, electrons and not on the shape of the conductor, as does resistance. In the course of this particular experiment I will be discovering the resistivity of a line of nichrome wire and in doing so, prove that the material is nichrome. The resistivity of a wire can be defined using the equation: ñ= RA/l = Resistivity = (resistance x cross sectional area) / length. The units of resistance being in ohms, (Ù), cross sectional area in meters squared, and the length of the wire itself measured in meters. The cross sectional area of the wire can be obtained by the use of the equation: ð x radius2 I will also be using the equation V = IR, V being the voltage in volts, I being the current in amperes (A), and R being the resistance in ohms (Ù). Resistivity can be defined as the resistance per unit length of a piece of material of cross sectional area 1m2. Defining the Resistivity of Nichrome Plan The internet site (http://mst-online.nsu.edu/mstonline/electronic/electronic2.htm) defines resistivity (or volume resistivity) as the term used to describe the relationship between electric current and the applied electric field. It is a measure of the resistance to the flow of current from a microscopic level, that is, as explained in terms of the atoms, the basic building blocks of all solid materials. The resistivity, r (Greek letter rho), depends on the behaviour and number of free, or conduction, electrons and not on the shape of the conductor, as does resistance. In the course of this particular experiment I will be discovering the resistivity of a line of nichrome wire and in doing so, prove that the material is nichrome.
Approximate Word count = 1422
Approximate Pages = 5.7
(250 words per page double spaced)
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