The room temperature — since if the temperature is increased the particles in the wire will move faster and this would not allow the experiment to be fair. There are no anomalous results that I would consider to be far away from the line of best fit. For example, in the filament of a light bulb, the long, thin wire resists the flow of electrons so electrical energy is dissipated as heat and light.
I am going to double over this experiment for the copper and aluminium and record my finds in a table.
When used for heating, it is often coiled both to save room and to increase the temperature with the same current. A way to overcome the parallax error was to find a voltmeter or an ammeter with a scale printed above a narrow strip of mirror. Nichrome is actually a trade name but just as Kleenex has become a common name for tissues, Nichrome has become a common name for any alloy with the same composition.
Electric current is the movement of electrons through a conductor. Resistance of wire coursework conclusion — KomDiM.
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.
The potential difference or voltage — if this is changed, the temperature of the wire would also change therefore making the test unfair. Also I predict Copper allows more current because copper does not hold on to their electrons very hard as nichrome and constantan, which eventually allows more current to pass through, and also releases energy.
I think this because as I know from my scientific knowledge that: The Ohms Law states that the current passing through a wire or resistor at constant temperature is proportional to the potential difference, a high resistance wire passes a small current and a low resistance passes a large current.
Teacher suggests outline method to determine resistivity by measuring resistance of wire but does not.
For this reason, devices called resistors are added to many circuits. Investigation into the variation diameter of the wire s. Below is a table illustrating the effect of changing the variables see Table 2: According to Giancoli, all electric devices have an inherent resistance to the current, but this resistance often has a very small effect on the current flow.
Use two alligator clips as a switch To begin, turn the power source to the lowest setting. On a low power setting the light bulb was dimmer than when it was on a high power setting. I will try to get my results as accurate as possible by waiting until the readings are stable and no lasting flickering.
The fiberglass surrounded a glass tube. There are many other trade names for the same material but eBay policy prevents the listing of them. The nichrome wire is the other resistor used in this experiment.
What affects the range of a to accurately predict the maximum height reached by the projectile i. The thickness will range between 0. These electrons find it easier to pass around through few materials than others. Coursework was introduced to science syllabuses in the early s, attempting to address the concern that some students are not very good at exams.
This is Nichrome 80 Nichrome A wire which has a slightly higher melting point than Nichrome The cross-sectional area of the wire — e. A variable DC power pack.
In this experiment I will only change 1 factor, which is the length of the wire. Nichrome wire by determining its resistivity - Sample Essay Metals have low resistance due to their delocalized field of electrons.
However, different metals have different values of. We will write a custom essay sample on Investigation on the resistance of nichrome wire specifically for you for only $ $/page.
Nichrome 80 Wire has a low temperature coefficient of resistance and a low change in resistance during its service life that combine to assure faster heat-up times, more uniform operating temperatures, and a longer useful tsfutbol.coms: 2.
An investigation into the resistance of a wire - HubPages Free gcse physics coursework essays. An investigation into the resistance of a wire noticed that if you double the length of the wire, the resistance is roughly Physics Coursework Investigating Resistance of wires and its Physics Coursework Investigating Resistance of wires and its Nichrome Length (mm) Voltage(v) Current.
To investigate what affects the resistance of a wire. VARIABLES: Need essay sample on Investigation of the resistance of a. NOCKERS ENGINEERING PRODUCTS is a specialist wire supplier in South Africa which has served manufacturing industries since in supplying wire material for their many applications.Restistance of nichrome wire essay