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Solenoids

Metal slinkies, coils of wire, magnetic fields, and MRIs. To determine the safety hazards of MRI machines, class members use the provided formula to calculate the magnetic field along the axis of the solenoid.

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Instructional Ideas

  • Vary the number of coils in examples to demonstrate the difference that the number of coils makes
  • Have the class research the MRI machine to see how the magnetic field is created and the number of coils
Classroom Considerations

  • The class should already be familiar with Biot-Savart Law
  • The eighth in a 14-part unit
Pros

  • The example shows the formula with values substituted
  • The lesson plan has an associated activity
Cons

  • The plan does not clearly denote an instructional method
Included Materials

  • Project
  • Vocabulary
  • Vocabulary