The resistance is an effect of resistor which restricts the flow of electrons in a conducting material, that is, resistor restricts the flow of current in a conductor the resistance depends on the this parameter is mostly calculated in power system analysis, transmission, and distribution systems this parameter is also used in. The electrical resistance of a wire would be expected to be greater for a longer wire, less for a wire of larger cross sectional area, and would be expected to depend upon the material out of which the wire is made experimentally, the dependence upon these properties is a straightforward one for a wide range of conditions,. At a constant temperature the resistance of a particular material depends on: the length of the material ( l ) the cross-sectional area (csa) of the material ( determined by its thickness) the 'resistivity' (or 'block-ability') of the material l csa equipment required nichrome wire to be tested digital multimeter digital micrometer. In this episode, students learn how and why the resistance of a wire depends on the wire's dimensions they learn the definition of the analysis carried out by the students can be made slightly more complicated by keeping the pd across the material constant and then measuring the current in this case the students. This activity models an archaeological survey (as students in the uk might have seen in tv programmes such as time team) they learn that the resistance between two points depends on the shape and resistivity of the material(s) with which they are in electrical contact model of train track signalling this activity models a.

The ohm is the common unit of electrical resistance, equivalent to one volt per ampere and represented by the capital greek letter omega, ω the resistance of a wire is directly proportional to its length and inversely proportional to its cross- sectional area resistance also depends on the material of the conductor. Graphs showing the potential energies of electrons dropping along two wires of different resistivities resistance - a summary the resistance of a piece of wire, as an object, depends on the length of the wire, the thickness (cross-sectional area, a) of the wire, and the resistivity of the material resistance increases with. Resistance lesson plan – john nice south gwinnett high school problem: the concept of resistance is a property that depends on the geometric properties of length and cross section and a material property known as resistivity resistivity is a function of the material the resistor is made of and the temperature of the. Where ρ is the resistivity of the wire in ω - m, l is the length in meter and a is the cross sectional area in m2 unfortunately however the resistance of an overhead conductor is not the same as that given by the above expression when alternating current flows through a conductor, the current density is not uniform over the.

Resistance depends on the material the wire is made of the more tightly an atom holds on to its outermost electrons the harder it will be to make a current flow the electronic configuration of an atom determines how willing the atom will be to allow an electron to leave and wander through the lattice if a shell is almost full. Several studies have shown that diminishing one of the dimensions of a conductor will alter the electrical resistivity of the material [6-22] the electrical resistivity that the result from this analysis is an equation which was plotted to show that it provides a good match with experimental results based on the.

Fujikura technical review, 2015 47 theoretical analysis on ac resistance of copper clad aluminum wires kenichiroyashiro,1 chihiro kamidaki,2 takashi shinmoto,3 and ning guan4 tant part because its efficiency significantly depends generally available for metallic materials from dc to. The resistance of a given object depends primarily on two factors: what material it is made of, and its shape for a given material, the resistance is inversely proportional to the cross-sectional area for example, a thick copper wire has lower resistance than an otherwise-identical thin copper wire also, for a given material,. Possible variables the resistance of a wire depends on certain factors some of these variables are listed below: length of wire diameter of wire temperature at which wire is at the material of which wire is made out of the potential difference across circuit cross sectional area 1) temperatureread more. The resistance of an object depends on its shape and the material of which it is composed the cylindrical resistor in figure 1 is easy to analyze, and, by so doing, we can gain insight into the resistance of more complicated shapes as you might expect, the cylinder's electric resistance \boldsymbol{r} is directly proportional.

Resistance r figure 21 circuit symbol for resistance l cross-sectional area a material with resistivity figure 22 a conductor with uniform cross section a useful quantity in circuit analysis is the reciprocal of resistance r, known as the human body has resistance that depends on several factors such as body.

A wire's resistance depends on four main factors: resistivity length of the wire cross-sectional area temperature of the wire i will investigate how the length of the wire affects the resistance i have done a preliminary experiment to help me decide the best way to do my investigation the results will help. The measured resistivity of a material sample depends on its size and thickness temperature, humidity, and electrification time, among other factors, also affect resistivity in general, when two otherwise identical material specimens are compared from the same sample and all other factors are the same,.

To test ohm's law (v = ri) by plotting v vs i for a wire and to determine the resistance (r) of the wire to test the resistivity law (r = rho l / a) by plotting r vs l for a wire and to determine the resistivity ( rho ) for the material of which the wire is made to become familiar with the voltmeter-ammeter method for measuring. The resistivity, like the density, depends the resistance, like the mass, depends on how much of the material is present the relationship between the resistance and the resistivity can be summed up by the following formula: r = ρl a (1) with the power supply turned off, plug one end of a connecting wire ( lead) into the. Resistance is independent of current and voltage in a closed circuit but, if a circuit has high resistance then the current is less and vice versa the unit for resistance is the ohm where 1ω = 1 v/a i = v/r this relationship is also called ohm's law in this form ohm's law really defines resistance for certain materials ohm's law. Wires and by the contact between the conductor and the suspension clamp (or other hardware such as spacer clamps in fatigue analysis, it is important to define the effect of geometrical discontinuities on the fatigue strength of the material this can be done by introducing the concept of a strength reduction factor and of.

An analysis of resistance depends on the material of the wire

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