| |
GCSE Physics Coursework - Resistance of a Wire Coursework Resistance of a Wire
Title: GCSE Physics Coursework - Resistance of a Wire Coursework Resistance of a Wire
Category: Science & Technology / Physics
Details: Words: 2114 | Pages: 9.0 (approximately 235 words/page)
GCSE Physics Coursework - Resistance of a Wire Coursework Resistance of a Wire
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.
Theory
What is resistance?
Electricity is conducted through a conductor, in this case wire, by means of free electrons. The number of free electrons depends on the material and more free electrons means a better conductor, i.e. it has less resistance. For example, gold has …showed first 75 words of 2114 total…
You are viewing only a small portion of the paper.
Please login or register to access the full copy.
|
|
…showed last 75 words of 2114 total…was not allowed to cool completely so that the temperature was higher for that measurement. Whilst unlikely (due to the two sets of results), this would cause a higher resistance as explained previously. However, it is now known, after researching the metal alloy "constantan," that the resistivity (the electrical resistance of a conductor of particular area and length) of this alloy is not affected by temperature. Therefore, in these experiments Ohm's Law does not apply.
Need a custom written paper?
|
|
|
