How is resistance affected by changing the length of a piece of nichrome wire in a simple circuit Essay Example

How is resistance affected by changing the length of a piece of nichrome wire in a simple circuit Essay Problem: I have been asked to investigate how resistance is affected by changing the length of nichrome in a simple circuit.What is resistance?Resistance is anything that slows down the flow of electrons/current. This is called a resistor. Resistors are either small pieces of material or long coiled pieces of wire that dont conduct electricity very well. For example, bulbs do not conduct electricity as well as a piece of copper mainly because copper contains loads of free electrons.Examples of resistors:* Hairdryer* Toaster* Filament in a bulbThe filament in a bulb is a great example of a resistor. It is a very thin wire so it slows down the flow of electrons and takes energy away from the electrons as they struggle to get through it. The energy is then changed to heat and light.Current:The flow of electrons in a circuit is called the CURRENT. Current is measured using an ammeter. Current is measured in units called AMPS.Voltage:Voltage is the amount of energy that the electrons have . It is measured using a voltmeter. Voltage is measured in units called VOLTS.In order for me to try and prove my original question I am going to have to carry out a number of experiments. In these experiments I am going to have to record the volts, and amps in order for me to be able to calculate the resistance when the length of the nichrome wire changes.When carrying out this experiment there is a number of factors that could affect the investigation. These include:* The length of the wire* The voltage passing through the circuit* Thickness of wire* Type of wireThe length of the wireAs the length of the wire plays a major part in our investigation we must make sure that we measure the wire very accurately in order to achieve accurate and reliable results.The voltage passing through the circuitWe must make sure that the voltage been passed through the circuit stays the same. Otherwise our results will not be accurate or reliable.Thickness of wireAs the resistance also plays a majo r part in the investigation I must make sure that the thickness of the wire remain the same throughout the investigation, otherwise our results will not be correct or accurate.Type of wireWe must make sure that we only use nichrome wire as any other type of wire will display different results due to its electronic arrangement.In my investigation I am going to keep the thickness of the wire, type of wire and the voltage passing through the circuit the same. The only factor I will be changing is the length of the wire in order to try and get an answer to my original question.Practical Procedure:Prediction: I predict that if the length of the wire is longer the resistance will be a lot greater as the electrons have a lot further to travel.

Belleau wood essays

Belleau wood essays The battle of Belleau Wood, June 1-26 of 1918, was fought five miles immediately northwest of the town of Chateau-Thierry on the River Marne, The Aisne-Marne Sector. Belleau Wood was approximately a mile in length and of irregular shape. It was mostly heavily wooded, cut by a deep ravine on the southern section, and also huge boulders scattered the area. Marines fought one of their greatest battles in history at Belleau Wood. The Marines helped to crush a German offensive that threatened Paris. The three-week long battle was not a masterminds work. Rather, it was a confused mess; often enough the soldiers didnt know where they, the enemy, or the front line was located on that one mile-square dark, bloody forest. This made it almost impossible to communicate on accounts of location and progress during the actions. Prisoners were numbered into the hundreds. One day, after an attack, the prisoner count grew by more than 300. There had been 1200 Germans in the woods that day, and with the exception of those prisoners, nearly all the rest were slain by the marines. This shows the intensity of which the Americans fought. The prisoners reported that they were glad to have a chance to surrender, seeing as though the artillery fire for three days had cut off their food and other supplies. The American attack was a furious one in which the Germans were rather impressed. The battle of Belleau Wood was the first battle in which the AEF (Allied Expeditionary Forces) recorded major casualties associated with the Great War. On this day, the Marine Brigade suffered the worse single-days casualties in the history of the United States Marine Corps, with the killing of 1087 men killed or wounded. The characterization of the USMCs determination and dedication impressed the adversaries and also proved to both the allies and adversaries that America was on the Western Front to fight. ...