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

Physics Investigating Resistance In A Wire

605 words - 2 pages

Investigating Resistance in a WireThe resistance is the name given to the tendency for a wire to oppose the movement of the electrons passing through it. The greater the resistance the electrons occur the more voltage is needed to propel the current through the wire. Resistance is defined by the following equation:Resistance R= p.d across the wire (V) Current through the wire (I) Key FactorsThere are many factors to be considered which can effect the resistance of a wire these include temperature, current, thickness of wire and the length of the wire. The temperature will affect the resistance because as the temperature rises the atoms in the wire will begin to vibrate more meaning they will get I the way of passing electrons. The problem with this method is that it tricky to vary the temperature of the wire and keep it at the same constant temperature. The current will effect the resistance because more electrons will be passing through the wire so if collisions do occur with atoms in the wire lots of the electrons will still get through. The thickness of the wire will affect the resistance because in a thick wire opposed to the thin wire there is more space for the electrons to move in thus reducing the amount of collisions and the resistance. Though this is good method it is hard to obtain different thickness of the same wire easily. The length of wire will effect the resistance in a similar way the thickness but the longer the wire the greater the resistance because there will be more of a chance for the electrons and atoms to clash as there are...

Find Another Essay On Physics Investigating Resistance in a Wire

Talking about investigating the resistance of a wire

1037 words - 4 pages across the circuit when in parallel.Things that I will measure:Volts - voltmeterAmps - AmmeterLength of the wireResistance - Formula (R=V/I)Prediction:I predict that the longer the piece of nichrome wire there is, the higher the resistance because if the wire is shorter the less the electrons have to travel because the circuit is shorter. A longer circuit has more resistance because the electrons have longer to travel. This would be as electrons

Investigating how the resistance of a wire Changes with length

1088 words - 4 pages represented with a longer wire, resistance will increase. This is because it takes much more time for an electron to pass through. A shorter wire will allow current to pass through at a much higher rate. Resistance is also affected by cross sectional area. The wider the wire is the more electrons will pass through at any one time. But length is the most important one in this experiment.As you can see from the diagram the shorter wire allows more

A Physics Investigation of the Resistance: Of A Piece of Wire?

2289 words - 9 pages Aim:The aim of this investigation is to investigate and discover if the length of a piece of metal wire effects its resistance when electricity is passed through it.PredictionBefore I make a prediction I shall explain about atoms, free electrons, electricity and resistance.Electricity travels through a conductor, in this case a length of wire, by means of free electrons. Electrons are the smallest parts of an atom that is situated in shells

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

2625 words - 11 pages with low resistance, the electrons move more freely, as they make fewer collisions. Resistance is a measure of how hard it is to move electrons through a wire. Resistance is a property of an electric circuit or part of a circuit that transforms electric energy into heat energy in opposing electric current. Resistance involves collisions of the current-carrying charged particles with fixed particles that make up the structure of the

Resistance in a Wire

798 words - 3 pages carry out my experiment I will start with a metre ruler and a piece of Nichrome wire taped at each ends. I will set up a circuit like the one below and I will put a power supply on 2 Volts so that the wire will remain cool and keep the test fair. I will range my measurements from 10cm to 100cm going up in lots of 10cm as this will give my a good indication of the resistance in a wire. I will not do it every 1cm or 5cm as the clips are 4mm wide so

Resistance in a wire- good essay

1276 words - 5 pages voltage on the surface of a conductor. Current is measured in amps or amperes. Resistance determines how much current will flow through a component. Resistors are used to control voltage and current levels. A very high resistance allows a small amount of current to flow. Resistance is measured in ohms ( ).HypothesisI think that the longer the wire is, the higher the resistance. This is because the current will have to travel a longer distance

Resistance of a Wire

1564 words - 6 pages GCSE Physics Coursework - Resistance of a Wire Coursework Resistance of a Wire 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

Resistance of a wire

1284 words - 5 pages wire. It does not pass trough as easily in a thin nichrome wire of an electric fire element. This wire has much more resistance. Energy has to be spent to force electrons through it. And heat comes off as a result.All conductors have some resistance but:- Long wires have more resistance than the short wires.- Thin wires have more resistance than thick wires.- Nichrome wire has more resistance than copper wire of the same size.Resistance is

Resistance of a Wire

1064 words - 4 pages A. PlanningPlan of the method to be used: -The resistivity of nichrome can be determined using the equation ??=?RA/LWhere:R:- Is the resistance of the wire in ?"ohms" and can be determined using the equation R=V/I where "V" is voltage in volts and "I" is current inamperes.L:- Is the length of the nichrome wire used in metres.A:- Is the cross-sectional area of the wire in metres square and can be determined using the equation A= ??d2 where "d" is

The Resistance Of A Wire

760 words - 3 pages resistance of a length of wire is calculated by measuring the current present in the circuit (in series) and the voltage across the wire (in parallel). These measurements are then applied to this formula:Gradient = resistanceV = I x RThe other ways of writing Ohm's Law are:R = V/I or I = V/ROhm's LawIt is also relevant to know of Ohm's Law, which states that the current through a metallic conductor (e.g. wire) at a constant temperature is proportional

Physic Sc1 Resistance Of A Wire

1468 words - 6 pages How the resistance of a wire changes with different lengths Planning We are trying to find out if and how the resistance of a wire changes by adjusting the length of the wire. I think that as the length increases; the resistance will also increase. I think this will happen because in previous experiments, my results have shown this. For example: I have done an experiment where I had to find out what variables affected the resistance of a wire. I

Similar Essays

Physics Coursework Resistance Of A Wire

1250 words - 5 pages GCSE Physics Coursework - Resistance of a WireAim: To investigate how the resistance of a wire is affected by the length of the wire.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

Physics (Resistance Of A Wire) Plan

980 words - 4 pages What affects the resistance of a wire Planning for the SC1 Introduction: In this experiment I will be investigating how length affects the resistance of a wire. This means I will be taking readings from an ammeter and also a voltmeter at different lengths of a wire. It will be powered by a power pack in which I will change the voltage to get different results.Aim: The aim of this experiment is to find out what affects the resistance of a wire

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

Gcse Physics Coursework Resistance Of A Wire Coursework Resistance Of A Wire

1551 words - 6 pages GCSE Physics Coursework - Resistance of a Wire CourseworkResistance of a WireTaskTo investigate how the resistance of a wire is affected by the length of the wire.TheoryWhat 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