The Relationship Between the Length of Constantan Wires in a Circuit and the Current Aim To investigate the relationship between the length of constantan wires in a circuit and the current flowing through. Introduction ============ In a conductor electrons are able to jump between atoms. However in insulators they remain around a single atom unable to move. Constantan, a metal, unlike most other metals is a poor conductor although it is also a poor insulator. Being a metal it
Investigating how the Resistance of a Constantan Wire is Affected by Its Length Introduction: In this experiment we will be investigating how changing the length of a piece of Constantan wire will affect the resistance. Therefore the length will be an independent variable and all of the other variables we will try to keep the same. The other variables included in this experiment are temperature, thickness of wire and density of wire. Resistance is a force, which opposes the
a short one of the same thickness. Resistance is measured in Ohms. Variables There were three variables that our group was able to choose from; the length of the wire, the area of the wires cross section (thickness) or the type of wire (constantan or nichrome). All of these variables are able to change the resistance of the wire. Here are my thoughts and predictions on what would happen to the resistance of the wire as you change the variables. I think that if you change the length
Prediction I believe the factors which affect the resistance of a wire are: 1. The length- the increase in length could increase the resistance. 2. The thickness of the core. 3. The material of which the wire is made up of- e.g. Copper, constantan and nichrone. 4. The number of strands within a wire: 5. The amount of current flowing through the wire. For this experiment, the factors which will be tested and measured will be the length of the wire, the material of which the wire
Resistance (Ω) Constantan 26 10 20 40 13.5 27.5 56.4 0.4 37.5 687.5 1410 Copper 26 10 20 40 0.9 1.5 2.5 0.4 22.5 37.5 62.5 Nichrome 26 10 20 40 32.5 59.4 118.3 0.4 812.5 1485 2957.5 Pre-test Findings: From my pre-test, I found out that using the nichrome wire would be best to use because it gave the both more reliable results and were also closer together. Constantan was not suitable
[IMAGE][IMAGE] List of Apparatus: · Ammeter · Variable resistor · Constantan wire · Connecting wires · Power pack I connected the above apparatus in series, using the connecting wires. Below is a circuit showing this connection. Below are samples of the wires I used: Thick wire: Fairly thick wire: Thin wire: Fairly thin wire: Method: I connected the power pack, ammeter, variable resistor and the constantan wire in series using the connecting wires. I then set the ammeter
The Resistance of a Wire Introduction In this investigation I will be trying to find out the resistance of a piece of constantan wire. I know that according to ohms law, the p.d is proportional to the current so if the p.d doubles so will the current. Through past experiments I know how to work out resistance, to work it out I use this formula Where the resistance is R, the p.d is V and the current is C, from this you can work out the resistance of any circuit. Aim of the Preliminary
need to keep constant in this experiment are: 1. Thickness of the wire. 2. Length of the wire 3. Input of voltage coming from the power supply should be kept constant. 4. Temperature of wire should be kept constant. Firstly if the constantan wire was increased then the resistance will be less. Thin wires have more resistance than thick wires. Secondly if the length of the wire got longer then the resistance is greater than a short wire. Thirdly if resistance increases and the wire
clear space to work in and nothing on the floor around me. In this investigation, I will set up a simple circuit to be able to read the voltage and current when the length of wire changes, so I then can work out the resistance. I will be using constantan wire starting of with 1m length and then decreasing it by 0.10m intervals down to 0.20m long. I will not go above 1m or below 0.20m because it may be too long that they resist so much current that the wire burns, or the length of the wire is
investigation to also obtain this resistance. Introduction As mentioned in the previous page, an electrician wants two resistances: 1.9 ohms and 28.5 ohms. I am to find out how to do this. I will be provided with different reels of wire of constantan, each reel having a different diameter. I will, for three different diameters, find the resistance of the wire at different lengths. For example, I will take the 24 gauge wire (0.56mm diameter) and find its resistance when it is at 100cm, 80cm
same at all times, adjusts using the variable resistor) 5) Repeat 3 times for each length of wire and find the average. 6) Then work out the resistance using the formula V÷I=R (Voltage ÷ Current = Resistance) Apparatus Power Pack Constantan wire Leads Voltmeter Ammeter Crocodile clips 1-meter ruler Variable resistor Fair test: To make this fair test I kept some of the things constant. Variables kept constant are the temperature (did experiment on the same day)
Investigating the Resistance of a Wire The aim of this investigation is to see how the length of a wire affects its resistance. Background knowledge To make current flow through a conductor, there must be a potential difference (voltage) across it. As the current continues to flow there are certain factors which increase the resistance; Length of wire: as the length increases there will be a higher percentage of fixed atoms, therefore the electrons carrying the charge will collide
Experiment on Electrical Resistance The electrical resistance of a material is its opposition to the flow of electric current (slowing the flow of electrons down). Resistance occurs when the electrons travelling along the wire collide with the atoms of the wire. These collisions slow down the flow of electrons causing resistance. Resistance is a measure of how hard it is to move the electrons through the wire. A current is the rate of the flow of charge (electrons) and the resistance
Differential Scanning Calorimetry(DSC) The thermoanalytical technique which gives the difference in the amount of heat required to increase the temperature of the sample and the reference is called Differential scanning calorimetry. The difference in amount of heat is measured as function of temperature. Throughout the testing, both the reference and the sample are maintained in same temperature. The sample holder temperature is increased linearly as a function of time. The reference sample should
RTDs are sensors used to measure temperature by relating the resistance of the RTD element with temperature. Most RTD elements are made up of finely coiled wire wrapped around a ceramic or glass core.The RTD element is made from a pure material which is usually platinum, nickel or copper. Platinum is often the choice made in resistance thermometers as it can measure different measures of extreme ends, is very unreactive and has a linear resistance relationship with temperature.The material has a
An Investigation into Factors Affecting Resistance of a Wire Plan: The possible variables I could use to find out factors affecting resistance are material wire is made of, length of wire, temperature and cross sectional area of wire. I will use cross sectional area of wire and length of wire because I think it will be hard to draw conclusions from the material of wire. I am not doing temperature because it would be hard to get results from and I think they wouldn't be as accurate.
Investigating the Resistance of a Wire We have been given the task to investigate the resistance of different wires, I am firstly going to start by explaining what resistance is, why it occurs, what causes it, and how it can be used to our advantages. Resistance is a term used to describe the property that various materials possess to restrict or inhibit the flow of electricity. Whether or not a material obeys Ohm's law, its resistance can be described in terms of its resistivity.
Mandela hopes South Africa's rugby team will win the final as they make their historic run to the 1995 Rugby World Cup Championship match. The dramatic style of realism is to try and bring to life on stage which was created in the late 1800’s by constantan Stanislavski. The Realistic style of drama is where people talk and move similar to the way we do every day but on stage. This writing piece will d...
cool completely so that the temperature was higher for that measurement. Whilst unlikely (due to the two sets of results), this would cause a higher resistance as explained previously. However, it is now known, after researching the metal alloy “constantan,” that the resistivity (the electrical resistance of a conductor of particular area and length) of this alloy is not affected by temperature. Therefore, in these experiments Ohm’s Law does not apply.
Resistance of a Wire Experiment Task To investigate how the resistance of a wire is affected by the length of the wire. Theory What is resistance? Electricity is conducted through a conductor, in this case wire, by means of free electrons. The number of free electrons depends on the material and more free electrons means a better conductor, i.e. it has less resistance. For example, gold has more free electrons than iron and, as a result, it is a better conductor. The free electrons