An investigation into the resistance of a wire free gcse physics coursework essay more sign in join 47 100cm nichrome wire method first, i will collect the apparatus i need and set it up as shown in diagram 1, below next, i will set the power pack on the lowest voltage possible to ensure that the current passing through the circuit. The resistivity of constantan was found to be 51 10-8, the resistivity of manganin was found to be 43 10-8, the resistivity of copper was found to be 1 10-8 and the resistivity of nichrome was found to be 111 10-8. Hi, i have done an experiment using a nichrome wire and found that its resistivity is 122 x 10-6 can this be right i did my experiment with normal conditions, the room was probably slightly above room temperature.
For gcse double science ok, so what you are looking is resistivity of nichromes so what's a nichrome it is an alloy or mix of nickel (hence the ni) and chromium (hence the chrome. The resistivity of nichrome at the operating temperature of the toaster is 13 × 10-6 ω m if i was behind on tulane coursework and actually used ucla’s materials to help me move forward and get everything together on time jill tulane university ‘16, course hero. Expected results material constantan nichrome copper stainless steel possible extension work different thickness of wire of the same material can be investigated to see if the resistivity is the same. In this experiment you will be testing the resistivity equation where ( is the resistivity, r is the resistance of the conductor, a is its cross sectional area and l is its length you will be required to design and use a simple circuit to measure the resistance of a nichrome wire and plot a graph of your results.
Hypothesis i think that the resistivity will increase with higher temperatures because with higher temperature, resistivity is higher due to the fact the atomic lattice structure increases background electrical resistivity is the measurement of how a material opposes the flow of an electrical current. Figure 612 a microscopic picture of current flowing in a conductor let the total current through a surface be written as i =∫∫j⋅da gg (613) where is the current density (the si unit of current density are . The quantity that is used is called resistivity and is usually indicated by the greek symbol rho, physics gcse coursework: resistance of wire aim: it does not pass trough as easily in a thin nichrome wire of an electric fire element. Uspas cryogenics short course boston, ma 6/14 to 6/18/2010 1 12 low temperature properties of materials conductivity (σ) or resistivity (ρ) are material properties that depend on extrinsic variables: t, p, b (magnetic field) i v a l a l a l r.
Nichrome alternatives i am looking at a resistivity of 1 ohm / meter but nichrome wire in 22swg is 282 ohm/meter ( looking at about 7cm total length which would give me quite a fitting problem of course, right up until the next time you short out a battery then the high current will be directly reflected in the movement current. Assignment help physics the heating element of a simple heater consists of a 22-m-long, 065-mm-diameter nichrome wire when plugged into a 120v outlet, the heater draws 90a of current when hot. Resistance of a wire data analysis coursework help for charter school year 10 how to complete the experiment. In this practical the resistance of samples of nichrome wire will be measured with a multimeter and the resistivity of nichrome calculated what is the relationship between the resistance of a wire and its radiusindependent variable: radiusdependent variable: resistancecontrolled variables: type of wire, temperature, length.
Nichrome® - a non-magnetic alloy of nickel and chrome primarily used as a resistance heating wire the commonly supplied alloy usually contains 80% nickel and 20% chrome by weight, although many other variations on the basic formulation are. Heating resistance alloy nicr 80/20 nichrome n80 wires , find complete details about heating resistance alloy nicr 80/20 nichrome n80 wires,n80 wires,nichrome n80 wires from electrical wires supplier or manufacturer-suzhou nickel alloy co, ltd. Resistance of a wire (physics) coursework watch announcements nichrome = 333 ohms constantan = 667 ohms because constantan has a higher resistivity than copper, when you are recording data, the values will get for resistance/change in potential/whatever will be higher this is a good thing as the results will be less susceptible. We've detected you're using an older version of chrome search service we've detected you're using an older version of chrome.
3 students should come to understand that the resistance of a wire depends on its length, its cross sectional area, and the material out of which it is made with some students you could go further and introduce the concept of resistivity ρ, through the relationship r = ρ l / a where r = resistance, ρ = resistivity, l = length and a = cross. Nichrome 80/20 is an ideal material, because it has relatively high resistance and forms an adherent layer of chromium oxide when it is heated for the first time material beneath the wire will not oxidize, preventing the wire from breaking or burning out.
Free nichrome wire papers, essays, and research papers in this piece of coursework, i have been finding out factors that affect the resistance of a wire - measuring the resistivity of a wire aim the aim of this experiment is to find out how the area of the cross section of the wire affects the resistance and also to find out the. A portion of nichrome wire of radius 260 mm is to be used in winding a heating coil if the coil must draw a current of 990 a when a voltage of 120 v is applied across its ends, find the following (take the resistivity of nichrome to be 150 10-6 ω m. Nichrome, a non-magnetic 80/20 alloy of nickel and chromium, is the most common resistance wire for heating purposes because it has a high resistivity and resistance to oxidation at high temperatures when used as a heating element, resistance wire is usually wound into coils.