But the electrical resistance between two points can depend on many factors such as the conductors length, its cross-sectional area, the temperature, as well as the actual material from which it is made for example, let's assume we have a piece of wire (a conductor) that has a length l, a cross-sectional area a and a. Essay on factors affecting the resistance of a metal wire - factors affecting the resistance of a metal wire 1 investigate some of the factors that affect the resistance of a metal wire the current and voltage will be measured and then v = ir will be used to calculate the resistance the potential divider circuit produced better. Polly friendshuh, an instructor at electrical construction and maintenance department of dunwoody college of technology, explains how to calculate the wire resistance and voltage drop in an electrical circuit in these two videos polly teaches the principle of electrical resistance and the factors that may effect resistance. Phy 156 | dr alexander zaitsev page | 1 resistivity objective objective of this lab work is to measure resistivity of a conductor with uniform cross-section over its length these parameters determine the resistance r of the if a piece of wire of length l and diameter d is used as the conductor (fig 1), its resistivity. The more familiar term electrical resistance measures how difficult it is for a piece of material to conduct electricity - this depends on the size of the piece: the resistance is higher for a longer or narrower section of the resistivity of insulators and conductors differ by a huge factor - typically one million, million, million.
Move through a conductor, such as a metal wire in the metal this makes it more difficult for the current to flow, and causes resistance the resistance of a long wire is greater than the resistance of a short wire the relationship between resistance and the area of the cross section of a wire is inversely proportional. Conduction: s gray, 1729 — resistance: georg simon ohm, 1827 regular version i ∝ v and resistivity factors affecting resistance in a conducting wire the general rule is resistivity increases with increasing temperature in conductors and decreases with increasing temperature in insulators unfortunately there is. Objective in this set of experiments, the differences between resistance and resistivity will be ex- plored equipment list a lump of play − dohc , four nails, a voltage supply, two multimeters, a flat piece of wood, ruler theoretical background resistance determine the resistivity procedure length dependence 1 remove.
Introduction charge moves more readily through some materials than through others the resistance of a sample is a measurement of how much the sample impedes the flow of electrons through it the type of material within a resistor and its physical dimensions are some of the factors which determine its resistance. A simple investigation of the factors affecting the resistance of a wire modelling a resistive survey 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.
To investigate the factors of affecting the resistance of a wire 2050 words - 8 pages physics coursework- ohm's lawaim: to investigate the factors of affecting the resistance of a wirein this experiment i will be using a metal nichrome wire to show the resistance when the length and width is changedvariablesvariables. The factor in the resistance which takes into account the nature of the material is the resistivity although it is temperature dependent, it can be used at a given temperature to calculate the resistance of a wire of given geometry it should be noted that it is being presumed that the current is uniform across the cross- section of. Now if v is proportional to i then you can also write i = cv, where c is some other constant, which you would determine by experiment, and then you would find that once you know the length and the cross sectional area of a particular piece of wire, you can calculate the resistance, which tells you how much current you will.
Experimentally determined the most basic law relating voltage and cur- rent for a resistor ohm's work was initially denied by critics born of humble beginnings in erlangen, bavaria, ohm threw the resistance of any material is dictated by four factors: 1 determine the resistance of an iron wire having a diameter of 2 mm. Variables affecting electrical resistance the flow of charge through wires is often compared to the flow of water through pipes the resistance to the flow of charge in an electric circuit is analogous to the frictional effects between water and the pipe surfaces as well as the resistance offered by obstacles that are present in. Task i determine the relationship between voltage and current in a simple circuit a what physical factors related to this piece of wire do you think are responsible for the amount of its total resistance list below two or three physical factors that you believe contribute to the total resistance of this particular piece of wire. Length, cross-sectional area, kind of material, resistivity and temperature: the ir re latio nships factors affectingfactors affecting resistanceresistance.
The larger the length of the wire, the larger the resistance this is because there are more atoms from the metal so there is more chance that the electrons would collide with one of the atoms therefore there is more resistance the length of wire will be variable throughout the investigation electrons have a longer distance to.
Observe changes to the equation and wire as you play with the resistivity, length, and area sliders. Resistance all conductors show some opposition to the flow of an electrical current this opposition to current flow is called resistance there are several factors that affect the resistance of a conductor material eg copper has lower resistance than steel length - longer wires have greater resistance thickness - smaller. In the simplest microscope model of conduction in a metal, each atom in the crystal lattice gives up one or more of its outer electrons resistance value = what happens to the resistor when i pass current through it now we will discuss the factors that contribute to the resistance of a long wire these are the diameter,. Answer resistance of a conductor directly depends upon length of the wire l so, if the length is doubled of a conductor, the nature of the material will not be affected and hence, resistivity will not be changed resistivity of a conductor depends on its length, area of cross section, temperature of exposure and metal used.
The resistance of the conductor depends upon the following parameters physical parameter : it's include length, area , bonding between the electron pair and what is the factor on which resistivity of a metallic wire depends on temperature : the temperature is a vital factor in determining the resistance of conductor. This 'sea' of dissociable electrons allows the metal to conduct electric current when an electrical potential difference (a voltage) is applied across the metal, the resulting electric field causes electrons to move from one end of the conductor to the other near room temperatures, metals have resistance. Although metal wires are very efficient conductors of electricity, they still have some resistance to the flow of current using larger gauges of wire on the coil will decrease this innate resistance this will increase the current and therefore the field using smaller gauges will increase the resistance, reduce the.