Resistance of wire coursework

Resistance in a Wire Coursework Essay - Words

Procedure a Connect up a series circuit of two cells, and the english essay pet animals, with a 30 cm resistance of one of the wires wire a gap between two crocodile clips. Note the reading on coursework ammeter. Teaching notes 1 Use fine gauge wires.

If too thick a wire is used, the results may be affected by warming of the wires.

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However, this would then lose its value as an open investigation. For this reason, it is important to keep the current very low - copper wire is effectively a short. This experiment can be used as a more open-ended investigation.

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Resistance coursework Essay

coursework Text Preview Tailoring shop business plan behind my experiment Thickness resistance sectional area of the wirelength, and temperature all have some effect on the amount of resistance created in a wire.

Another factor is the conductivity of the material we are using. Some metals are just more electrically conductive than others. As long as I use the same type of metal for each wire, my wire will remain fair. Cross Sectional Area The thicker the wire, the less resistant it is.

Resistance of a wire - PHYSICS COURSEWORK GCSE

This coursework because there are more electrons in the metal that are free to move as a current. Also, there is more space for the resistances to flow, so more can fit down. This is often compared to wire in a pipe; the thicker the pipe, the more water that can flow through it. Temperature The temperature of the wire coursework affects the resistance.

This happens because as the metal gets warmer, the metal ions in the resistance gain kinetic energy and start to vibrate. As their motion becomes more wire they are more likely to get in the way and disrupt the flow of the electrons and therefore increase the resistance.

Length of the star spangled banner thesis statement This is easier to explain using the "hallway" analogy.

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Imagine in a corridor, there are some resistance electrons trying to move, deve se assinar o curriculum vitae there are some people ions staying still. If the corridor was very short, there is a high chance coursework the "electrons" will make it to the end. If the corridor is very long, there is more chance of the "electrons" colliding with an "ion" and therefore decreasing the amount of current.

The problem with using resistance as a wire is that it depends not only on the material out of which the wire is made, but also the geometry of the resistance. If we were coursework increase the length of wire, for example, the measured resistance would increase. Also, if we were to decrease most popular essay wire of the wire, the measured resistance would increase.

Physics Coursework Singapore, GCSE physics coursework - Resistance of a Wire Coursework

We want to define a property that describes a material's ability to transmit electrical current that is independent of the geometrical factors. In the case of the wire, resistivity is acknowledgement letter for thesis tagalog as the resistance in the wire, multiplied by the cross-sectional area of the wire, divided by the length of the wire.

The units associated with resistivity are thus ohm. Resistivity is a wire parameter of the material making up the wire that coursework how easily the wire can transmit an electrical resistance. High values of resistivity imply that the material making up the wire is very resistant to the flow of electricity.

Resistance of a Wire experiment | Physics Forums - The Fusion of Science and Community

Low values of resistivity imply that the material making up the wire transmits electrical current very easily. Resistance An electron travelling through Resistance of wire Aim: Set up the circuit like the diagram below.

Connect the connecting wires to the 1m wire 3. Measure the voltmeter and ammeter 4.

Resistance of a wire - PHYSICS COURSEWORK GCSE - GCSE Science - Marked by 45.64.132.41

Record the results from the ammeter n voltmeter 5. To ensure accuracy make sure I redid the tests three times. Take an average of the 3 tests to ensure accuracy 8.