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Coulomb Balance Lab Report
Abstract:
The goal of the experiment was to demonstrate the fundamental joys known to many a physicist of Coulomb¡¦s law through comparative analysis of electrostatic force, potential, and capacitance. We completed this goal by using a torsion balance to measure the properties of such an event. We then completed the analysis to find that after making linear and angular measurements of the separation, that the voltage varied over the spheres depending on the distance in a uniform ration.
Theory and Background:
If one lesson in electrostatic forces doesn¡¦t cover Coulomb¡¦s law then you have been served a great injustice. Coulomb¡¦s law is one of the fundamental principles that one needs to know when comparing two points (i.e. Q1, Q2) that are separated by a distance of r. This law is represented with the equation:
F=kQ0Q1/r2
Where K=1/4ƒàƒÕ0 and ƒÕ0 is the permitivity of free space (ƒÕ0 =8.85 * 10-12 C2/Nm2)
In addition, at a large distance such spheres, when conducting, should vary with the equation, 1/r2. Of course when the sphere are moved into closer proximity the charges then redistribute to minimize potential energy. If by chance the charge of the two spheres are the same, then they will repe
Approximate Word count = 1297
Approximate Pages = 5 (250 words per page double spaced)
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