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Search results for 'resistance in a wire' (343 Results)

... is resistance. Various factors affect the resistance. Length of wire - the longer the wire is, the more collisions there are between the eelctrons and the atoms - so resistance increases. Thickness of a wire - thin wire means less spces for electrons to pass, so higher resistance. Material of wire - ... factor that influences the resistance is the nature of the material. Hence, Resistance of a wire = length of wire multiplied by a constant for a given material all divided by, Cross-sectional area i.e. R = L/a × p ohms where R is resistance, L is length of wire, a is cross-sectional area and p ...
resistance of a wire i kno dat a longer wire will hav a higher resistance and a thicker wire has a lower resistance,the longer wire has a higher resistance because it has more particles, why does a wider wire hav a lower resistance wen it has more particles in it? or is it if it is a thicker wire ... distances as well as wen they collide into particles? A thicker wire does not have less dense particles, but it does have more space in total between particles that the electrons can travel through, therefore less resistance to current flow. The electrons lose energy when travelling longer distances ...
How Does Resistance Change With Length Of Wire.doc "For instance the length of wire, this is a variable as the length of wire increases the time taken for the electricity to pass through it resulting in a higher resistance, e.g. like water flowing through a pipe as the water flows it encounters ... resistance of a piece of wire 80 cm long which has a resistance of 4.2 and then of a piece 160 cm long which has a resistance of 9 we can see that there is all most a doubling effect going on, which will become apparent when I graph this data". As you imply in the last part of the sentence, picking ...

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resistance of a wire "I predict that, as the length of the wire doubles, the resistance will also double, but as the cross-sectional area of the wire doubles, the resistance halves. This means that the length will affect the resistance more than the thickness will." The first part of this statement ... the resistance equally, but in opposite directions! I don't know why you are bothering to compare two variables - you get no extra marks for doing so. You could get the marks just by studying length. It is about 8 years since the mark scheme gave extra credit for using 2 variables! "Resistance is ...
Resistance of a piece of wire (coursework) First your questions: You do not really NEED to consider safety aspects - marks are no linger awarded for this,and marks would only be lost if the experiment was obviously UNSAFE. The only safety aspect, really, is not to use too short a wire or too large a ... talk about 1 wire, 10 wires, 15 wires etc. What exacvtly did you do? Did you twist the wires together or something? You must make you exact method clear. This is not helped by the fact that you do not put units for wire thickness in the table. The figures given for gauges of wire are not linear, by ...
How the length of a piece of wire affects the resistance I am doing some physics coursework on the subject, 'what factors affect the resistance of a piece of wire?' and i would like any background infromation that could help me to construct a good plan and method for my experiment that will give me ... of electrons along a wire. The particles within the wire tend to impede the flow - they provide "resistance". The longer the wire is the greater the resistance is. As the current has to push through more particles. A thicker wire provides less resistance than a thin wire because there are more ...
... of wire hey guys im doin ma resistance cw for physics n in my introduction i hv 2 write all the factors that affect resistance ive done length and thickness but i dno wat 2 do 4 temperature n material so can sum 1 plzzzzzzz temme how these 2 factors affect the resistance of a wire thnx Hey i am ... higher the temperature, the higher the resistance. Material charge flow is the material that a wire is made of. Not all materials are created equal in terms of their conductive ability. Some materials are better conductors than others and offer less resistance to the flow of charge. Silver is one of ...
... The Resistance Of A Wire "I think that as I increase the length of a wire the resistance will increase this will happen because the current will have to go through the obstacles of the atoms more." This is nowehere near enough detail. You need to explain what a current is; what resistance is and how ... just "everything". "I will need to do my experiment more than once and use different resistance for the wire to see the differences that the resistance can do to the experiment." What does this mean? You must put units on the column headings of your table. What affects the resistance of a wire.doc
... is about the wire that cuases resistance. Actually, the electrons don't really 'squeeze together'- it is just that the atoms of the wire impede their flow, so that they 'GET squeezed together'. Resistance is not electrons colliding with each other, but with the particles in the wire. FAIT TESTING ... The dependent variable is what you measure - the resistance (or the current, from which the resistance is determined). Why did you use two different wires (not wrong - just needs explaining)? CONCLUSIONS "Therefore when I doubled the length of my wire the number of electrons across it doubled." This ...
research on resistance in a wire i know about the 4 different variables but i'm not sure how or why they affect the resistance please help i need em 4 my coursework 2 get an 8 4 my planning Resistance is basically caused by particles in the wire slowing the flow of electrons. The electrons have to ... the molecules of the wire. If the molecular structure is quite tightly-knit, there will be less space to get through - that is why material of wire makes a difference. If the wire is thicker, there will be MORE spaces to get through - less resistance. In a longer wire the electrons have to get past ...
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