Experimental derivation of magnetic force on a wire

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SUMMARY

The discussion centers on an experimental investigation of the magnetic force on a wire carrying electric current in a magnetic field. The experiment yielded three graphs depicting the relationship between force and wire length (L), current (I), and magnetic field (B), all showing a linear correlation through the origin. The participant seeks to derive the equation F = k⋅L⋅I⋅B, acknowledging that the constant k should differ slightly from 1 in practical scenarios. A suggestion was made to plot force as a function of the product L*I*B to determine the value of k accurately.

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  • Understanding of electromagnetic theory, specifically the Lorentz force law.
  • Familiarity with graphing techniques and data analysis.
  • Knowledge of experimental physics and measurement techniques.
  • Basic proficiency in using graphing software or tools for data visualization.
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  • Learn how to plot force as a function of the product L*I*B using experimental data.
  • Research methods for calculating the constant k in electromagnetic experiments.
  • Explore the implications of the Lorentz force law in practical applications.
  • Investigate common sources of error in measuring magnetic forces in laboratory settings.
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Physics students, experimental physicists, and educators interested in electromagnetism and practical applications of the Lorentz force.

nickek
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Hi!
I have performed an experiment measure force on a wire with electric current in a magnetic field. I got 3 graphs: Force as function of length (L) of wire, Force as function of current (I) and Force as function of magnetic field (B). In all cases, I got approximately a straight line through origo. Well; so far, so good.

If I know the variated values of the magnetic field, how can I from these functions get the relation F = k⋅L⋅I⋅B? I know that the Tesla-unit is adapted so that k = 1, but in an experimental setup it should differ slightly from 1. How can I get this value from the experiment?

Thanks!
Nick
 
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Can you plot the force as a function of the product L*I*B, using all of your data? You should be able to get a value for k from such a graph.
 
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Redbelly98 said:
Can you plot the force as a function of the product L*I*B, using all of your data? You should be able to get a value for k from such a graph.
Thank you. My failure was that I not included the values held as constants in the product of each measure when I plotted the graph...
 

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