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Magnetic Force Balance

Magnetic Force Balance. 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

theodore-todd
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Magnetic Force Balance

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  1. Magnetic Force Balance

  2. 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

  3. Magnetic Force vs. Current

  4. Magnetic Force vs. Angle

  5. Magnetic Force vs. sin θ 2 Volts

  6. 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

  7. 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

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