This website uses cookies to ensure you have the best experience. Learn more

Length Affects The Resistance Essay

3610 words - 14 pages

Aim:The aim of my investigation is to investigate how length affects the resistance of a length of wireThe 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 areaThese must be kept constant (except the length of the wire). The three major factors are explained bellow:1) Temperature When the temperature of a metal increases the resistance of that metal increases. This is because when the temperature increases the atoms of the metal vibrate more vigoursly because of the increase in energy. This means that the electrons have more difficulty getting through the wire as they collide with the atoms which are in their pathway. This increases the amount of collisions therefore there is more resistance. However it is hard to keep the temperature exactly the same as the room temperature might change from day to day. It is essential to use a low voltage because it means a low current that will not heat up the wires. If a high voltage is used the energy would be in form of heat which would make the experiment unfair. The investigation will be done at room temperature. The temperature cannot be investigated because it is hard to control the range of temperature needed without the correct apparatus.2) Length of wire 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 travel when the wire is longer, so there are more collisions .The length of the wire will make a difference to the resistance. This is because when you have a long wire, the electrons have to squeeze together for longer to be able to pass through the wire than they do in order to be able to pass through a short wire.3) Type of material Different materials have different resistances because the materials' atomic structures are different so some metals have low resistances and some have high resistances. Therefore it is important to keep the material the same throughout the experiment unless a different material is used to check if the conclusion or theory works for all materials. If different materials are used throughout the investigation, it will affect the results. For example if sometimes copper is used and sometimes nichrome is used, the results where copper is used will be of a low resistance because of the material and not because of the diameter of the wire. Throughout the experiment Constantan will be used. The type of material will affect the amount of free electrons that are able to flow through the wire. The number of free electrons depends on the amount of electrons in the outer shell of the atoms, so if...

Find Another Essay On Length affects the resistance

An investigation into how the diameter of a wire affects its resistance

2872 words - 11 pages Skill area P: PlanningWhat I am going to investigate is how the diameter of a wire affects the resistance of the wire.I plan to change the diameter of the wire.In order to keep it a fair test I will need to keep the following things the same:-The same voltage of electricity entering the circuit (I used 6V)-The length of the wire-The temperature-The type of wireI have identified some hazards and I will deal with them as shown below:Hazard 1

GCSE, Physics: What affects the resistance of a piece of wire?

2625 words - 11 pages ; when a wire is heated, the atoms in the wire vibrate because of their increased energy. This causes more collisions, and collisions slow the rate of flow of electrical charge through the circuit, and so cause more resistance.- Material; the type of material affects the amount of free electrons which are able to flow through the wire. The more electrons in the material the lower the resistance would be, but if the atoms are in the material are

This essay shows the resistance and accomadation of Native Americans on Europeans. Shows the devastating affects of each style of conquest. Reference to James Wilson- "The earth shall Weep"

2060 words - 8 pages Cultural AttackThe Native Americans were living a peaceful and fulfilling life living off the land until the Europeans arrived. Most of the conquest was through war but they were also able to conquer culturally. Many tribes resisted and responded to the Europeans in different ways. Accommodation was always first, but when accommodation fails, resistance is always the last resource. Each impact had its devastating affects. The Europeans migrated

What Factors affect the resistance of a piece of wire(evaluation missing)

895 words - 4 pages Aim:The aim of this is to investigate how the length of a wire affects the resistance of it.Prediction:I predict that the longer the piece of wire, the greater the resistance will be. This is due to the idea of the free moving electrons being resisted by the atoms in the wire. In a longer piece of wire, there would be more atoms for the electrons to collide with and so the resistance would be greater. The relationship between the wire length and

Resistance Of Wire Investigation (length)

1002 words - 4 pages PlanIn this investigation I am going to investigate how the length of a piece of wire affects its resistance. The following are all variables that affect the resistance of the wire:- The thickness of the wire is a big variable as the thinner the wire the bigger the resistance. This is because the current has to squeeze through a thin wire, but it can easily flow through a thicker one.- The length of the wire is also a big variable as the longer

Restistance of Nichrome wire

544 words - 2 pages Investigating the resistance of Nichrome wire.AimIn this investigation, I am going to be invstigating how the length of Nichrome wire affects the resistance that is applied.PredictionIn 1826, Georg Ohm discovered that the current flowing through a metal wire is proportional to the potentail difference across it, it basically means if you double the potential difference you double the current. The thin wire in a lamp tends to resist the movement

The Change in Resistance of a Carbon Paper

1383 words - 6 pages temperature. We are going to be studying how changing the width of the paper affects the resistance, and so to ensure a fair test we will have to keep all of the other variables constant, as if they were also changing the results could be affected and the experiment would not be of any use. We will therefore keep the type of paper the same (which is easy), will keep the length of the paper the same for each experiment (which

Resistance of a wire (GCSE corsework)

2812 words - 11 pages straight-line showing as length increased so did resistance. On that thick wire results when plotted the data went up in a straight line still showing that as length increased so did resistance bout the line was not as steep as the thin wire line. For medium wire results when plotted they did not resemble a straight line.The results do support my prediction, this happened as increasing the length of the wire affects the resistance because more

CGSE Physics Coursework - Resistance in Wire

1701 words - 7 pages Resistance in WireMy task is to investigate how the length of a piece of wire affects its resistance.Before we can begin to investigate the effect of length against resistance we have to understand what resistance is and how it is measured:ResistanceElectricity is conducted through different types of conductors, metals, liquids and gases through free electrons. A free electron is an electron that is not attached to an atom or ion or molecule but

Resistance in wires

2150 words - 9 pages allowing the electrons to flow easily causing there to less resistance. I predict as I double the length of the wire the resistance will also double. I will see if my prediction is true when I conclude my results.Pre-testAim: To see how the width affects resistanceMethod: I will now carry out a pre-test to help me choose a suitable width for the wire. I will setup the equipment correctly. I have used two different lengths, 20cm, the minimum

Physic Sc1 Resistance Of A Wire

1468 words - 6 pages , contributed towards the straight line. Temperature is one of the variables that affects the resistance of a wire. I recorded my results instantly to reduce the possibility of temperature rising. For details, see prediction. I predicted that as the length increases, so would the resistance. I could have been more precise and said that the resistance was directly proportional to the length. In my original prediction I said that the graph would be a

Similar Essays

Will The Length Of Wire Affect The Resistance?

833 words - 3 pages PHYSICS PRACTICAL ASSESSMENTPLANA variable is something that can be changed or measured. The following is a list of variables that can be changed in the experiment that I will be doing:·Changing the length of the wire·Increasing the cross-section of the wire·Changing the material used·Changing the temperature·Changing the resistance of the wire·Changing the voltage going across the wire·Changing

Investigating How The Resistance Of A Wire Changes With Length

1088 words - 4 pages AimThe aim of this investigation is to reveal that the factor of length affects the overall resistance. So when changing the length of the conductor does resistance increase or decrease.PredictionI predict that as the length of the wire decreases so will the resistance. This is because through a shorter length of wire would allow more current to move through at a higher rate than a longer wire.When the wire increases then the resistance will

To Investigate How The Length Of A Simple Pendulum Affects The Time For A Complete Swing

1919 words - 8 pages AimTo investigate how the length of a simple pendulum affects the time for a complete swingTheoryWhen the pendulum is at the top of its swing it is momentarily stationary. It has zero kinetic energy and maximum gravitational potential energy. As the pendulum falls the potential energy is transferred to kinetic energy. The speed increases as the pendulum falls and reaches a maximum at the bottom of the swing. Here the speed and kinetic energy are

For This Essay I Investigated Ohms Law. I Investigated The Effect That The Length And The Thickness Of Wire Had On The Resistance

1721 words - 7 pages . Therefore, there will be fewer collisions between particles and this will reduce the resistance.I.E ?26 SWG 24 SWGv.As some materials are better conductors than others, this will obviously affect the resistance. This is why gold plugs are preferable in stereo systems.AimTo investigate what affects resistance. I have chosen to investigate length at 5cm intervals and thickness. I have chosen 24 SWG, 26 SWG and 28SWG (with 24 SWG being the thickest wire and