Investigation: how the resistance in a circuit varies with the length, thickness and type of wire

Introduction
A current is a flow of negative electrons around a circuit or electrical pathway. This is measured in how many electrons per second or the charge they are carrying go round the circuit (amps or amperes) Voltage or Potential Difference measures how much energy individual electrons have to use up as they go around a circuit. (Volts) Components in a circuit have a Resistance value which will affect the current. A mathematician named Ohm made observations which led him to formulate the law;

V =i x R
Voltage = current x resistance
(If the components are at a constant temperature)

Wire thickness is measured using swg “standard wire gauge” which is the length from a lump of metal that a wire is pulled out from. Therefore a wire with a 26 swg is thicker than a wire with 32 swg. I am going to investigate how the different lengths, gauges and types of wire can affect the current in a circuit.

Method
I am going to construct a circuit using different 100cm length wires, a battery, a voltmeter, an ammeter and crocodile clip connections. The ammeter will be fitted in series and the voltmeter will be fitted in parallel with the wire. I will use a meter ruler to measure the length of the wires each time I change the resistance by making the wire shorter by moving the crocodile clips down the length every 10cm each time starting with 100 cm. Once I know what voltage that supply is set on I will measure current in the circuit and voltage across the ends of the wire each time I change the length of the wire and from this I can work out the resistance of the wire for each length. I am going to use a 26 swg Nichrome wire, a 28 swg Nichrome wire, a 32 swg Nichrome wire and a 32 swg Constantan wire all the same length. I took a first set of readings Once I have recorded the current, voltage and repeated them. I calculated the average values. Once I have...

...How the Length of a Wire Affects Its Resistance
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 plan my...

...How Does The Legnth Of A Wire Affect Resistance In A Circuit?
Physics Investigation
Aim:
To measure how the length of a wire affects the amount of resistance when an electrical current is passed through it.
Background Information:
What is an electrical current
When a full circuit is created (i.e. a continuous loop has been made...

...this investigation, I will set up a simple circuit to be able to read the voltage and current when the length of wire changes, so I then can work out the resistance. I will be using constantan wire starting of with 1m length and then decreasing it by 0.10m intervals down to 0.20m long. I will not go above 1m or below 0.20m because it may be too long that they resist so much current that the...

...How does the length of a wire affect its resistance?
Introduction:
This first report in Physics will show the investigation of how the length of a wire affects its resistance. For starters I will go through the main definitions, to get a better knowledge of what is going to happen. However I will plan it out first to show each step of how I started,...

...these are called ‘free electrons.’ Elec-trons flow from the negative terminal to the positive terminal. Electrons carry energy around the circuit, they attain their energy from the battery. Current is measured in Amps.
What is resistance?
Resistance is the opposition to the flow of electric current through a material. Resistance is measured in Ohms. Resistance is calculated by dividing the voltage by the current....

...that affect the resistance of a piece of wire; the one I am investing is the length at constant temperature.
My objective in this experiment is to investigate one of the factors that affect the resistance of a piece of wire. The factor I chose was length.
Factors:
There our four different things that affect the resistance of a wire:
1. The Length because...

...To investigate how the resistance of a wire is affected by the length of the wire.
Theory
What is resistance?
Resistance is a force which opposes the flow of an electric current around a circuit so that energy is required to push the charged particles around the circuit. The circuit itself can resist the flow of particles if the wires...

...this piece of coursework I have been asked to investigate into the resistance of wires when the length is changed.
INTRODUCTION
The objective for my coursework (as already stated above) is to investigate how changing the length of wire can affect the resistance.
There are factors which can affect how accurate our expriment is come on four levels.
As in any scientific experiment,...

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