The electrons will bump together and the more they bump the higher the resistance of the wire. I think this because there are more collisions between the electrons and atoms in a longer wire there fore since the electrons carry the charge therefore less current will get through. I have explained the formula for finding the voltage using the current and the resistance as shown on the previous page. If a 14-gauge wire was used on the same circuit, then the breaker would allow up to 20 Amps to flow through it. Wire 1 has radius R, and wire 2 has radius 2R.
I am working in a Group of 4 including myself and working in a team together should help us get an accurate output. The Width when the wire is very thin its very hard to go through, you can compare it to a person going through a big, or little door, the thinner the door wire the harder it will be to go through it. I found that the resistance increased as the thickness of the wire decreased, however, when I did the test with the copper wire I found that it was so unresistant that there would not be a lot of point in conducting my experiment using a copper wire because I would not really be able to compare the results. Factors Affecting the Resistance of a Wire The aim of this experiment is to investigate one factor that affect the resistance of a wire. This heating of the medium due to the passage of charge carriers is a general property of all materials and is due to the resistance offered by the material to the flow of charge. As water in a hose pipe, the longer the pipe the longer the water takes to reach its destination.
This is because there is a steeper 'electric slope' in place to make the charges slide down. For example, gold has more free electrons than iron and, as a result… 1693 Words 7 Pages How does divorce affect children? Below is a table of averages, I did these averages so that it would help me be more accurate and make my graph easier to read and more accurate. Copper and aluminum are among the least expensive materials with suitable conducting ability to permit their use in wires of household circuits. The higher the impurities, such as salt, the less resistance it has. This means they have more chance of colliding, which will make it harder for the current to flow.
The factor I chose was length. From my results I have found out that the longer the length of the wire the more resistance there is and the shorter the length of the wire the less resistance there is. Each of the variables cancel leaving the ratio of resistance of wire 1 to wire 2 is 2:1 , or wire 1 has twice the resistance of wire 2 even though wire 2 is twice as long. The 78% who lived in rural areas accounted for c. Some cell holders have clips which can bridge the insulator causing a 'short circuit'. These are the things I am going to keep the same Å¸ Material of the wire Å¸ The temperature of the wire room temperature Å¸ The same thickness of the wire Results: Length meters Volt v Current I Resistance W 1 m 2 m 3 m 4 m 5 m 1m 2m 3m 4m 5m 1m 2m 3m 4m 5m This is the table for the results I obtained. Note down all results carefully in results table each time a result is collected.
However when a system is disturbed, feedback mechanisms control take action to reestablish a new balance. In a long tube there are more atoms, this slows the electrons down as they 'bounce' off into another direction. The electronic configuration of an atom determines how willing the atom will be to allow an electron to leave and wander through the lattice. Those materials with lower resistivities offer less resistance to the flow of charge; they are better conductors. What effect does this have on the children as they grow into adulthood? I have recorded these results in a graph. One multi-meter, set on the Ohm? Move the negative clip from 10cm, to 25 cm, to 40 cm, to 50 cm, to 60 cm, and finally to 75 cm. In a thin wire these electrons have to squeeze tightly together in order to pass through, however in a thick wire these electrons do not have to squeeze together as much to be able to pass through.
Students should be encouraged to adjust the voltage to keep currents small with every set of readings. As this is the correct value, I can work backwards to see that the previous calculations were correct. An Alternative Answer Resistance is directly proportional to length , and inversely proportional to cross sectional area. There are a few factors that affect how much resistance electricity encounters, including the width of the wire, the wire material and the length of the wire. If you use a mains power supply, use one that is designed to limit the output current to about 1 amp, and preferably with a current overload indicator. A steady increase in voltage, in a circuit with a constant resistance, produces a constant linear rise in current. After collecting my results I drew three graphs.
The temperature can affect the resistance in a wire, because the more thermal… 1596 Words 7 Pages How Does The Diameter Of Wire Affect The Resistance In A Circuit? However I will plan it out first to show each step of how I started, and then go into detail about the results and what the investigation on a whole has showed me. We also did some preliminary work to see if there is a difference weather the two wires are apart from each other or constantly touching each other at all parts, all the time. If short lengths of wire are used with relatively high currents and voltages, then significant electrical heating may also occur. Perhaps you're doing a lab and need to know the resistance of a resistor used in the lab. One multi-meter set on the setting for measuring in Ohms? This is know as resistivity. Resistance of electricity is based on many scientific and mathematical factors.
Parenting style can determine whether the child will have issues such as problematic behavior or poor…. This is the cause of resistance and where electrical energy is turned into heat energy. Å¸ Power pack Å¸ Wire board with 5 lengths of wire 1,2,3,4,5 meters Å¸ Ammeter amps, to measure the current, I Å¸ Voltmeter Volts, to measure the voltage, V Å¸ Connecting wires The units I shall be using are the following. To get the Cross Sectional Area for two wires together you multiply what you found for the first wire by two, for three wires you multiply by 3 887 Words 4 Pages Factors Affecting the Health Community in Fresno There are many factors that affect health communities in California but looking at a specific community health, helps to focus on geographical areas rather than the people itself. The values that I noted were also very similar to the catalogued book values, which further supports the reliability of the experiment. The range of lengths of wire I have chosen are: 0 mm, 100 mm, 200 mm, 300 mm, 400 mm, 500 mm, 600 mm, 700 mm, 800 mm, 900 mm, 1000 mm. Copper is an example of a conductor.
So we can be sure that the calculations for these is correct as the outcome is the same as the separate calculation for gradient, using the graph. Set the multi-meter to the Ohmmeter setting. However my procedure and results were not fully accurate and there are areas and methods that I could improve on and use. I will be using constantan wire starting of with 1m length and then decreasing it by 0. Would the resistance double because the diameter has doubled? I can predict that the thinner the wire the higher the resistance. Analysis of Results: From the graph and table of results i can see a pattern emerging.