# Resistance of a wire coursework essays

My aim is to find out which factors affect the resistance of wire and how they affect them. This means that the resistance of a metallic conductor is constant providing that the temperature also remains constant. Furthermore, the resistance of a metal increases as its temperature increases. My aim is to find out which factors affect the resistance of wire and how they affect them. This means that the resistance of a metallic conductor is constant providing that the temperature also remains constant. Furthermore, the resistance of a metal increases as its temperature increases.

This is because at higher temperatures, the particles of the conductor are moving around more quickly, thus increasing the likelihood of collisions with the free electrons. Resistance is the ratio of Voltage: In my experiment I will be using wire, because it has a high resistance.

This could be either it has a closer ions or more ions than other metals. For example Copper has a low resistance due to the arrangement of its ions. A rise in temperature causes ions inside the metal to vibrate more causing electrons to collide into them this builds resistance; therefore the electrons find it harder to get through the wire.

## Resistance Coursework - Essay

The greater the temperature the greater the resistance because electrons are colliding more causing friction. Therefore the relationship between them is directly proportional. The thicker the wire the easier it is for the electrons to go past. The thinner the wire, the smaller the area the electrons have to pass through. This means that they collide more often and as a result sacrifice more of their energy to the neighbouring particles in the wire.

The cross section of the wire and the resistance is inversely proportional this means that the greater the thickness of the wire the lower the resistance. The longer the wire the more ions there are for the electrons to get past. Energy has to be used to push current through a wire. If the electrons have to travel further in a long wire, therefore more energy will be needed.

The relationship between resistance and the length of the wire is directly proportional this means that the greater the length of a wire the larger the resistance. The variable I have decided to use is the length of wire because I believe that it is the easiest to control to my ability.

I predict that as the length of the wire increase so does the resistance. This is due to the idea of the free moving electrons being resisted by the atoms in the wire. In my experiment I will be using the following equipment: To supply the potential difference. To measure the current. To measure the potential difference. To be used as a conductor. To complete the circuit. To make sure we have a constant current in order to take an average measurement.

I will measure the resistance of 8 different lengths of nickrome wire using a tape measure. I shall join the multimeter in series with a Direct current power supply i.

The multimeter is better to use because of the larger currents and because the readings are given to 2 decimal places.

I shall then proceed to connect a 50 mm length of nickel-chrome wire, which shall be measured using a tape measure, he output from the ammeter. I shall then connect the voltmeter across the wire I will be testing. Then I will attach the negative terminal of the voltmeter to the negative terminal of the power supply, therefore completing the circuit.

For the first length, which will be 10mm, I will measure the current going through the wire and then I will measure the voltage acrossResistance of a wire coursework - Sample Essay For example, gold has more free electrons than iron and, as a result, it is a better conductor.

The free electrons are given energy and as a result move and collide with neighbouring free electrons. Free College Essay Physics Coursework Theory - Resistance of a Wire.

## Resistance of a wire coursework Essays

Theory behind my experiment Thickness (cross sectional area of the wire), length, and temperature all have some effect on the /5(1).

Resistance of a wire coursework Essays: Over , Resistance of a wire coursework Essays, Resistance of a wire coursework Term Papers, Resistance of a wire coursework Research Paper, Book Reports. ESSAYS, term and research papers available for UNLIMITED access. Physics Coursework Theory - Resistance of a Wire This Essay Physics Coursework Theory - Resistance of a Wire and other 64,+ term papers, college essay examples and free essays are available now on attheheels.com Autor: review • December 6, • Essay • Words (2 Pages) • Views4/4(1).

Physics Coursework - Resistance of a Wire Coursework. GCSE Physics Coursework - Resistance of a Wire Coursework Resistance of a Wire Task To investigate how the resistance of a wire is affected by the length of the wire.

Resistance in a Wire Coursework In this investigation we are trying to look for resistance in a piece of wire, and how the length of a wire can increase or decrease the resistance.

Physics Coursework Theory - Resistance of a Wire - Essay