# A Wire's Length's Effect Resistance

Length: 564 words (1.6 double-spaced pages)

Rating: Excellent

#### Essay Preview

A Wire's Length's Effect Resistance

Planing
=======

Aim:

To find out how the length of a nicrome wire affects the resistance.

Prediction:

The longer the wire the more resistance there will be.

[IMAGE]The atoms in the wire are very close together, because the wire
is a solid. The atoms are made of protons, neutrons, and electrons.

[IMAGE][IMAGE] = atom = electron

[IMAGE]In a long piece of wire there are more atoms so there is less
room for the electrons to get through. The electrons bump into the
atoms and lose some of their energy.

[IMAGE]However in a short piece of wire, there are less atoms. This
means that it is easier for the electrons to move through the wire.

The atoms rub against the electrons, and this creates friction. The
friction also creates heat, which makes the wire hot. If the wire gets
too hot, it will melt.

Diagram:

[IMAGE] Battery

Ammetre

[IMAGE]

[IMAGE] Voltmetre Nichome wire

Method:

[IMAGE] Set up the apparatus as shown in the diagram. Using a metre
ruler, measure out 10cm of nicrome wire. Set up the circuit and take
the readings from the voltmetre and the ammetre. Repeat the experiment
with 20,30,40,50,60,70,80, and 90cm of wire. Work out the resistance
using this equation:
----------------------------------------------------------------------

V= voltage
----------

I= current
----------

R= resistance
-------------

Safety:
-------

Make sure your hands are dry when use electricity. Be careful when
handing the wire as it may get hot. Do not let the wire get too hot or
else it will burn out.
----------------------------------------------------------------------

Fair test:
----------

To keep the experiment fair, I will use the same ammeter, voltmeter,
and power pack, throughout the experiment. To get accurate results I
will use a digital ammeter and voltmeter, and will keep the nicrome
wire the same width throughout the experiment.
--------------------------------------------------------------------

Obtaining evidence

MLA Citation:
"A Wire's Length's Effect Resistance." 123HelpMe.com. 25 Jan 2020
<https://www.123helpme.com/view.asp?id=120305>. ## Need Writing Help?

Get feedback on grammar, clarity, concision and logic instantly.

## The Length of a Wire and Its Effect on Resistance Essay

- The Length of a Wire and Its Effect on Resistance Introduction: In an electrical circuit, the current (flow rate of charge) depends on the battery voltage that causes the charge to flow through the circuit and the components in the circuit. A circuit consists of a bulb, a battery and a resistor. The bulb is like a resistor, it slows down the electrons and the battery pushes the electrons and gives them energy. A component is a resistor, it slows down the flow of electrons. The bulb acts as a resistor because inside the bulb is a thin filament wire, and so not many electrons can flow through this then slows them down....   [tags: Papers]

Free Essays
1265 words (3.6 pages)

## Essay on Investigating the Relationship Between Length and Resistance of a Wire

- Investigating the Relationship Between Length and Resistance of a Wire Aim === To investigate the effect the length of wire has on resistance. Background information ====================== Ohm's Law. The current in an object at constant temperature is proportional to the potential difference across its ends. The ratio of the potential difference to the current is the resistance of the object. The object must be at a constant temperature for the law to apply since a current will heat it up and this will change its resistance....   [tags: Papers]

Free Essays
436 words (1.2 pages)

## Investigating the Relationship Between the Length of a Wire and Its Resistance

- Investigating the Relationship Between the Length of a Wire and Its Resistance Aim: To find the relationship between the length of a wire and it’s resistance. Planning: We conducted a preliminary experiment to help us conduct the real experiment. In this preliminary experiment we aimed to find out what thickness and type of wire would be suitable for the experiment, and what range of lengths of wire and range of voltages and currents would be suitable for measuring. We discovered that at too great a voltages and too short a length, the wire became very hot....   [tags: Papers]

Free Essays
900 words (2.6 pages)

## The Resistance of a Wire Essay

- The Resistance of a Wire Introduction In this investigation I will be trying to find out the resistance of a piece of constantan wire. I know that according to ohms law, the p.d is proportional to the current so if the p.d doubles so will the current. Through past experiments I know how to work out resistance, to work it out I use this formula Where the resistance is R, the p.d is V and the current is C, from this you can work out the resistance of any circuit. Aim of the Preliminary The aim of this preliminary work involves making decisions about the length and thickness of the wire, which will be suitable for the main investigation The preliminary w...   [tags: Papers]

Free Essays
1567 words (4.5 pages)

## Resistance of a Wire Essay

- Resistance of a Wire If the length of the wire is increased, then the resistance will increase. This is due to the electrons having a longer distance to travel and so more collisions will occur. Due to this, the length increase should be directly proportional to the increase in resistance. Material: The type of material will effect the number of free electrons, which are able to flow through the wire....   [tags: Papers]

Free Essays
1096 words (3.1 pages)

## Essay about Resistance of a Wire

- Resistance of a Wire Aim To investigate how the electrical resistance of a wire changes in relationship to its length. Prediction I think that as the length of the wire increases so to will the resistance of it. I also believe that the rate at which the resistance of the wire increases will be directly proportional to the length. The graph to show this should therefore look something like this: The material and cross sectional area of the wire is constant throughout the experiment....   [tags: Papers]

Research Papers
1635 words (4.7 pages)

## Essay on Resistance of a Wire

- Resistance of a Wire The title of our investigation is 'To electrical resistance in wires. The aim is to find the effect of the length and area of wires on their resistance. Resistance is the restriction of the electrons in a wire. Components in a circuit will resist the flow of current through them. The greater the resistance in a wire, the smaller the current that flows for a particular voltage. The more components that are in a circuit (eg. Lamps, diodes etc), the more resistance will occur....   [tags: Papers]

Free Essays
1529 words (4.4 pages)

## Resistance of a Wire Essay

- Resistance of a Wire We are trying to find out what affects the resistance of a wire. Resistance is the slowing down of electric flow (flow of electrons) due to metal ions. The equation to measure resistance is: Resistance = Voltage Ã· Current R = V / I Resistance is measures in 'volts per amps' or, more commonly, 'Ohms' (Î©). There are a few things that affect resistance. I think these are: Â¶ Length of wire Â¶ Diameter of wire Â¶ Material/type of wire Â¶ Temperature I am going to try and find out how the diameter of the wire affects the resistance of the wire....   [tags: Papers]

Free Essays
2648 words (7.6 pages)

## Essay about Resistance of a Wire

- Resistance of a Wire In this course-work I will investigate different factors that effect a given piece of wire's resistance. Varying certain values to indicate trends and patterns. These will be the length of wire and the strength of voltage moving through the wire. From these two variables I intend to examine the relationship between length of wire, voltage strength and resistance. Resistance: Resistance occurs when the electrons travelling along the wire collide with the atoms of the wire....   [tags: Papers]

Free Essays
1138 words (3.3 pages)

## Factors that Effect the Resistance to a Piece of Wire Essay

- Factors that Effect the Resistance to a Piece of Wire Aim; My aim is to find out what factors (variables) effect the resistance to a piece of wire. Scientific knowledge; To work out the resistance I would use this formula; R= V I And to work out the current I would use this formula; Folded Corner: Voltage (V) is measured in volts = V Current (I) is measured in ammeters = A Resistance (R) is measured in ohms = â„¦ I = V R Electricity flows through a wire which results in the free electrons becoming active and moving vigorously within the wire....   [tags: Papers]

Free Essays
483 words (1.4 pages)

### Popular Essays

Length of wire (cm)

Current

Voltage

Resistance

10

0.88

1.83

2.08

20

0.5

2.03

4.60

30

0.36

2.11

5.86

40

0.27

2.16

8.00

50

0.22

2.20

10.00

60

0.19

2.22

11.68

70

0.16

2.23

13.94

80

0.14

2.25

16.07

90

0.13

2.27

17.46

Analysing evidence
==================

[IMAGE]

Above is the graph of my results. It has a steady line which increases
evenly. This is because the resistance is proportional to the length
of the wire. This means that if you double the length of the wire the
resistance is also doubled. When the wire is longer there are more
atoms in it, this makes the electrons take longer to pass through the
wire, creating more resistance. This is shown in the graph as the
longer the wire the more resistance there was.

Evaluation

The results I got were quite accurate, although I had one odd result.
This may be due to taking down the wrong readings from the voltmeter
or the ammeter. Also while measuring the lengths of the nichrome wire,
my measurements might have been slightly inaccurate as the rulers used
might not have been exact. However this should not have affected my
results too much.

To make my experiment possibly more accurate I could have got 3 sets
of results and found an average but this would be too time consuming.
I don't think I could really improve on the way the experiment was
done because my results were quite accurate. I also found that the
experiment was quite easy to set up, as it was simple and
uncomplicated.

Further experiments I could do related to the resistance in a wire
would be to see whether the following factors would make a difference
in the resistance of a wire:

The width: I think that the resistance would be decrease as the wire
got wider, because there would be more room for the electrons to move
through the wire.

Material: if I was to use different wires then the resistance would
change depending on how many atoms were in the wire.