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This experiment investigates the relationship between magnetic force, electric current, and angle using a simple apparatus constructed from commercial parts. It measures how magnetic force varies with current and the angle of the current element relative to the magnetic field. The setup clearly demonstrates the Right Hand Rule (RHR) and Newton's Third Law by showcasing the interaction between the current element and the magnetic field. With robust results, this experiment provides valuable insights into fundamental concepts of electromagnetism, making it an ideal hands-on learning experience.
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Features • Measures the dependence of the Magnetic Force on the Current • Measures the dependence of the Magnetic Force on the angle the current element makes with the Magnetic Field • Measures the magnetic field via the force produced on the current element • Explicitly demonstrates the Right Hand Rule (RHR) for the magnetic force on the current element • Demonstrates Newton’s Third Law since the force on the current element and the force on the magnet are an action-reaction pair. The wire visibly deflects due to the magnetic force
Magnetic Force vs. sin θ 2 Volts
Magnetic Field Measurement 2x10-4kg x 9.8 m/s2 = 2 amp x 10-2 m x B x sin(π/2) B≈0.1 Tesla
Summary and Conclusions • The apparatus is easy to construct from commercial parts with minimal fabrication • The experiment is robust and has been successfully tested • The apparatus demonstrates explicitly that the magnetic force is the cross product of the vector current element and the magnetic field
