Hows does changing the length of wire affect resistance? essay
The 4 different variables that affect the resistance of a wire are: ã˜ length of the wire ã˜ area of cross-section of the wire ã˜ material of the wire ã˜ heat in every circuit there is a current, i, a voltage, v, and a resistance, r. For example, when the length of the wire is 20cm the resistance is 314 ohms when the length of the wire is 40cm the resistance is 618 ohms, which is roughly double in my main investigation i will see if this observation applies to my results. From my experiment i have found out that as the length of the wire increases, the resistance of the wire increases at a similar rate, therefore, the rate of increase in the length of a wire is directly proportional to the increase in resistance. The length of the wire should be approximately proportionally the same as the resistance in theory, if the wire is doubled, then so will the resistance if the length is twice as much, then there will be twice as much collisions, which would increase the resistance. Preliminary work: find out which wire is the best insulator main experiment: how does the length of wire affect its resistance ohms law: electric circuits are designed to transfer just sufficient energy to operate the components in the circuit.
The classic physics experiment this was designed as an intro for an isa but could be used for this practical in any syllabuss it includes model results, info on variables , anomalous data and graphs. Factors that would be affect the resistance of the graphite are length, cross sectional area and temperature as the length of the conductor is shorter it would allow more electrons to pass through at a higher rate rather than a longer one. Essays- introduction: in this coursework investigation, i will be introduction: in this coursework investigation, i will be doing a series of experiments to see how changing the length of a piece of wire affects the resistance of the wire. Observe changes to the equation and wire as you play with the resistivity, length, and area sliders sample learning goals predict how changing each variable will affect the resistance.
Why does resistance increase with length ask question this process creates the resistance thus, when the length of the wire increases, the amount of particles scattered from the nuclei increases which also increases the resistance which increases the voltage back to where it was this all happens so quickly that the voltage doesn't. How does the length of a wire affect its resistance this research paper how does the length of a wire affect its resistance and other 64,000+ term papers, college essay examples and free essays are available now on reviewessayscom autor: review • november 28, 2010 • research paper • 4,070 words (17 pages) • 2,980 views. Read also does length of wire affect current essay cross sectional area of wire: for cross sectional area of wire, as i predicted, the greater the cross sectional area, the less resistance, this is because there is more space for electrons to fit through the wire when it is very thick, and so there will be less collisions between the electrons. Factors affecting the resistance of wire 1883 words | 8 pages aim: to investigate the factors that affect the resistance in a conductor the main factors that affect the resistance in a conductor are: length temperature cross sectional area material magnetism the factor that we are going to change is the cross sectional area.
Also, the length of a wire has a linear correlation with the resistance 2x length = 2x resistance so your wire resistance will be length / thickness, but that doesn't explain why the thickness should increase with length. Think about the fact that electons have got further to travel, because the length is increasing so it's harder for the electrons to pass through (there's more chance of them being blocked or whatever) = higher resistance. Investigating resistance of a wire essay - investigating resistance of a wire aim: to investigate how the resistance of a piece of resistance wire depends on length and to find the length of wire needed to make the required resistance. For example, a 5 ohm single with two strands of 28 awg in parallel is a 6/5 wrap around a 3/32 for a resistance of 51 with 5mm total leg length when you twist it until it breaks on a drill the way that twisted messes does, you end up around 4mm tp.
Hows does changing the length of wire affect resistance? essay
In my physics coursework i am going to investigate the effect of the length of a wire on its resistance resistance is the measure of how easy it is for current to flow through a wire current is the rate of flow of charge through a conductor, and it is measured in amps using an ammeter to help me. The connection between current, voltage and resistance was discovered in 1827 by georg ohm, a german physics and how does length affect resistance when the length of the wire increases, resistance increases. The wire material is also an important factor to consider, as it can affect the wire length that can be used on a project highly conductive materials like silver and copper offer the least amount of resistance to the flow of electrons compared to a highly resistant material like rubber. We know that, the resistance of a wire (a)if length is tripled: l'=3l,then the new resistance r'= =3r hence resistance also gets tripled (b)if diameter is tripled :d'=3d new resistance will be 1/9 times of original resistance (c)if resistivity is three times the original resistivity.
- As the length of the wire does not change each cm still gets the same number of volts across it - the potential gradient does not change and so the average drift velocity of individual elecrons does not change.
- Chapter 22 physics study play dimensions and resistivity change how do each of these changes affect the resistance of the wire when metal wire is heated, collision rate of charge carriers within wire increases, so resistance increases the potential difference across a length of wire is increased what does not increase the.
Hows does changing the length of wire affect resistance essay sample the objective for my coursework (as already stated above) is to investigate how changing the length of wire can affect the resistance. When you change the diameter of the wire, you change the surface area a little, but you change the cross-sectional area a lot (which lowers the resistance), which means that the fusing/melting current will depend on the diameter. Originally answered: how does the resistance of a wire depend on its length there is a formula which defines the resistance (r) of a wire which is defined r = pl/a “p” is the specific resistance of the wire material, “l “is the length of wire and “ a” area of cross section of wire. Resistance of a wire coursework essay 1530 words nov 28th, 2006 7 pages show more essay resistance to change how does length affect resistance essay affect resistance coursework aim to find out how the length of a wire can affect resistance.