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Lab 4 – Magnetic Fields

Introduction:

This lab we measured the magnitude of a magnetic field produced by a C-shaped electromagnetic. The magnetic field was measured using two methods. First we measured the force exerted on a current carrying rod. We then measured the difference of a magnetic flux through a search coil both inside and outside of a magnetic field. We observed a large discrepancy between the two methods for obtaining values for the magnetic field.

Procedure:

For the first method of obtaining the magnetic field B, we measured the force exerted on a current-carrying conductor. A horizontal conducting bar was placed it between the positive and negative ends of an iron C-shaped electromagnet. The conducting bar was attached to a plastic scale and we used metal washers as counterweights on the other end. A diagram of the apparatus is shown below:

[pic]

For each set of trials, the current I through the electromagnet would be held constant while we......

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Approximate Pages: 6 (250 words per double-spaced page)

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