Investigating The Factors That Affect The Resistance Of A Wire

1055 words - 5 pages

Investigating the Factors that Affect the Resistance of a Wire


To study the factors which affect the resistance of a wire.

Background Information

Although current and potential difference measure different things,
they are related to each other. In 1826, Georg Ohm discovered that
doubling the p.d. doubled the current. (Taken from

Ohm's Law: the current flowing through a metal wire is proportional to
the potential difference across it (providing the temperature is

Electricity flows through a conductor, in this case the wire, by means
of free electrons. The number of free electrons varies depending on
the material and ...view middle of the document...

During the preliminary work, I tested the method that I would use for
the main experiment to see if it worked and decided to follow it up.
In the main experiment I decided to test two different types of wire
and see which had a higher resistivity.


DEPENDENT - the resistance

INDEPENDENT - the length

CONTROL - the power-pack setting


I think the longer the wire, the more resistance there will be. This
is because the longer the wire, the more atoms there will be for the
electrons to collide with. Therefore the longer the wire, the hotter
it will get when a current flows through it as there will be more
atoms and electrons colliding.

If the length is doubled, I think the resistance will also double
because doubling the wire will double the number of electrons. More
collisions will happen causing a higher resistance.


100cm of constanton wire (SWG 26)

100cm of nichrome wire (SWG 26)

Metre ruler

Crocodile clips

Connecting wires





1. Set up equipment as shown in the diagram.

2. Connect one of the crocodile clips to 0cm and the other to 10cm.

3. Record the readings of the ammeter and voltmeter.

4. Move the clip on 10cm up another 10cm and record the readings

5. Continue moving the clip up 10cm and recording the readings until
you reach one metre.

6. Repeat 2 more times so you can work out an average result.

7. Repeat the whole thing with whichever wire you did not use the
first time.




Average results for the constanton wire:

Length (cm)

Current (A)

P.d. (V)

Resistance (Ω)






































Other Essays Like Investigating The Factors That Affect The Resistance Of A Wire

The Evolution of House Price in the Uk and the Factors That Affect the Demand and Supply of Houses

1840 words - 8 pages demand 2. The evolution of house price in the UK and the factors affecting supply and demand Over the last four decades, the UK housing market has been subject to boom/bust cycles and Stephens (2011) indicates that UK has one of the most persistently volatile markets in the world. Especially, since 1997 there has been a record growth in UK house prices. The above chart indicates that there are significant fluctuations the in UK housing

Factors That Affect in Choosing Hotel and Restaurant Course as Perceived by the Bshrm Students of Trinity University of Asia

1094 words - 5 pages Money - Medium of exchange - an object that is generally used in exchange for goods and services. If it didn't exist we would need to barter. - Unit of account - an agreed measure for stating the prices of goods and services. - Store of value - money can be held for a time and used later in exchange for goods and services.  The importance of money in any economy can be seen from the role it plays: 1. Money acts as a

Resistance Of A Wire

2861 words - 12 pages Resistance of a Wire Aim Which factors affect the resistance of a wire? Prediction I believe the factors which affect the resistance of a wire are: 1. The length- the increase in length could increase the resistance. 2. The thickness of the core. 3. The material of which the wire is made up of- e.g. Copper, constantan and nichrone. 4. The number of strands within a wire: 5

The Relationship Between Length, Width And Resistance Of A Wire

2875 words - 12 pages in these collisions resulting in the wire heating up. Doubling the length of the wire will result in double the resistance. By doubling the length of the wire one is also doubling the collisions that will occur, thus doubling the amount of energy lost. Number and ranges of readings: Measuring the resistance of the wires with different diameters will result in five different readings. When investigating the

Economic Factors That Affect Apple in China and Usa

1682 words - 7 pages limited company and the company is open to the public to buy shares in the organisation. The company is based in the secondary sector of business. Here is a table stating some of the economic factors that may affect Apple. China United Kingdom GDP China GDP is worth 5879 billion dollars or 9.48% of the world economy, according to the World Bank. from 1960 until 2010, China's average GDP was 839.37 billion dollars reaching a massive rate 5878.63

Physics Coursework Electrical Resistance Of A Wire

3180 words - 13 pages Definition of resistance: A materials opposition to the flow of electric current.Formula for resistance: Voltage (V) / Current (A) = resistance (Ω)For my Physics course work I am going to investigate how resistance changes when different factors change. I will now describe the four factors which affect resistance, and out of these four factors I will choose one that I will investigate.Factors which affect resistance:- The length of a wire

Investigating the Capacitance of a Parallel-Plate Capacitor Using a Reed Switch

1821 words - 8 pages Title: Investigating The Capacitance of a Parallel-plate Capacitor Using a Reed Switch Objective : To investigate the factors affecting the capacitance of a parallel-plate capacitor using a reed switch. Apparatus : Reed switch 1 Signal generator 1 Capacitor plate 2 Polythene spacers 16 Polythene sheet 1 Bateery box with 6V 1 Voltmeter 0 – 5 V 1 Resistance substitution box 1 Light-beam galvanometer 1 Standard mass 0.1

The Affect That Emily Grierson Has of the Old South and the New South

1370 words - 6 pages The Affect that Emily Grierson has of the Old South and the New South “A Rose for Emily” is one of William Faulkner’s strangest, most unusual, and famous short stories ever because of its unique plot. The story focuses on Miss Emily Grierson, the unknown mystery of her life, the views of the Old South about Miss Grierson, and the views of the New South about her. Some critics say that Miss Emily Grierson was “one of the strongest, strangest

Assimilation of the Indians Resistance was Futile

512 words - 3 pages The world of the Indian was simple and they were more than happy for everything in it to stay the same. The Indians of North America had to acclimate themselves to the new world that was overtaking theirs or perish. Actions taken by the white reformers were necessary albeit a might inappropriate at times for the survival of the Indian. Problems faced by the reformers were varied and accompanied by hostility at almost every turn.There were

The Cause/Affect Of Abortions

954 words - 4 pages have an abortion might suffer psychological damage. After a woman goes through the procedure of the abortion, she might start having nerve disorders, sleep disorders, regrets, or be recommended for psychiatric care. If the woman does suffer from this, she might abuse any other unwanted children that didn't have any other options, but to live with their biological mother. The fear, anxiety, pain, and guilt associated with this procedure are mixed

Information Security and the Areas That Truly Affect It

1623 words - 7 pages With information security now demanding a significant level of attention from organizations, the traditional approach of identifying risk in purely technical terms has proven insufficient. Please consider the areas that truly affect information security and integrate those findings into an overall risk management study to ensure an effective and appropriate technology program. I believe the greatest information security threat is

Related Papers

Investigating Factors That Affect The Action Of Pepsin On Photographic Film

1278 words - 6 pages Investigating Factors That Affect The Action of Pepsin on Photographic Film Introduction ============ [IMAGE] This is an experiment to investigate the factors that affect the action of pepsin on photographic film. The photographic film is made up of three layers, plastic, photographic pigment and gelatine in between. See diagram: The protease enzyme digests the gelatine section, causing the other

Investigating Some Factors Which Affect The Rate Of Reaction

945 words - 4 pages Investigating Some Factors Which Affect the Rate of Reaction Between Hydrochloric Acid and Sodium ThiosulphateBackground InformationReactions can be completed at different rates. The rate of reaction is measured by observing how quickly reactants are used up or how quickly products are forming. This can be calculated in three ways:oPrecipitation - When the products of the reaction is a precipitate, which will cloud the solution. Observing a

Gcse Science Coursework Investigating The Factors That Affect The Reaction Between Sodiumthiosulphate And Hydrochloric Acid

415 words - 2 pages Investigating the factors that affect the reaction between sodiumthiosulphate and hydrochloric acidAim:To investigate the differences in rate of reaction between sodiumthiosulphate and hydrochloric acid as the concentration of sodiumthiosulphate is either raised or lowered while keeping the total volume of the sodiumthiosulphate solution at 50cm .The chemical reaction for this experiment is:Method:I start with 5cm of hydrochloric acid to which I

Investigating Factors That Affect Heart Rate And Blood Pressure

882 words - 4 pages analyze the factors that may affect them. Time will be an independent variable. 1. Measure the sitting heart rate. 2. a. Feel with the fingertips of your index and middle finger for your pulse point until you detect pulsations. b. Keep yourself as still as possible while you are taking your heart rate. c. Count the number of heartbeats you feel in one minute. Record