Online Plagiarism Checker The resistance of a wire - Sample Essay In a metal, the atoms exist as positive ions surrounded by electrons, some of which are free to move within the crystal structure. Therefore the longer a piece of wire is the more resistance there is see diagram below.
After a reading is taken the energy flow must be disconnected. If the x-section is doubled, resistance is halved. If you increase the length the resistance will also increase i. Temperature is one of the most important factors that affect resistance.
Both the rheostat and the ammeter will the n be connected to the energy source but the energy source will not be turned on. I placed the wire so that it connected to the ammeter, voltmeter and light bulb.
Using crocodile clips the wire will be connected to the voltmeter, ammeter and rheostat as in the diagram 2. Individual electrons never acquire a steady velocity, but the large numbers involved can be thought as having an average drift velocity. The readings must be taken in the same surroundings, because if a reading is taken, pressure on the table can make difference, as the apparatus is moving.
Resistance is the opposition in the current of the flow. Fair Test Principals 1.
After connecting everything as the diagram shows, we turned on the power pack so that a flow of electrons could be sent around the circuit. To work out the resistance, I divided the readings on the ammeter by the readings on the voltmeter for each length.
I would then repeat the experiment with different wires of different cross-sectional areas. If that is true I am doing the test success fully. There is no net motion in any particular direction.
At all temperatures above absolute zero, all the particles are in constant motion. More collisions inside the wire means a higher resistance. Without an external electric field, the electrons rapidly and randomly move about in all directions.
The free electrons are accelerated by the electric field, gaining kinetic energy from the field. Resistance is responsible for the current that flows — high resistance produces a low current and low resistance a high current.
The reading on the voltmeter and the ammeter will be recorded. Show preview only The above preview is unformatted text This student written piece of work is one of many that can be found in our GCSE Electricity and Magnetism section. Variable Resistor Special wire in different lengths First I started with the longest measurement, cm.
Resistance increase Independent X-sectional area of wire:Resistance of a Wire Essay that affect the resistance With other words the thinner the wire gets the higher the resistance.
3. The Temperature when the wire gets warmer and warmer the metallic ions will vibrate more and more making it harder for the electrons to move.
The Resistance of wire is one of the most popular assignments among students' documents. If you are stuck with writing or missing ideas, scroll down and find inspiration in the best samples.
Resistance of wire is quite a rare and popular topic for writing an essay, but it certainly is in our database. The resistance of a wire - Sample Essay In a metal, the atoms exist as positive ions surrounded by electrons, some of which are free to move within the crystal structure.
At all temperatures above absolute zero, all the particles are in constant motion. Aim: I will be studying the resistance of wire, to gain a better understanding of resistance and connecting topics.
Resistance is caused when electrons flowing along a wire1 collide with the particles of the wire. Resistance of a Wire This Essay Resistance of a Wire and other 64,+ term papers, college essay examples and free essays are available now on mint-body.com Autor: review • December 11, • Essay • 1, Words (8 Pages) • 1, Views.
Wire Resistance Investigation Essay - Wire Resistance Investigation Planning Aim In this experiment the resistance change in a wire will be investigated. I will be investigating if the thickness or cross-sectional diameter of the wire affects the resistance.Download