Eddy Currents in Electromagnetism
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Questions and Answers

What causes the induction of eddy currents within conductors?

  • Electric current in the conductor
  • Relative motion of a conductor in a magnetic field (correct)
  • Static magnetic field
  • Constant magnetic field

    • In what planes do eddy currents flow within conductors?

  • At an angle to the magnetic field
  • Parallel to the magnetic field
  • In a helical pattern around the magnetic field
  • Perpendicular to the magnetic field (correct)

    • What is the magnitude of the eddy current in a given loop proportional to?

  • Rate of change of resistance
  • Friction of the material
  • Strength of the magnetic field and area of the loop (correct)
  • Voltage of the material

    • According to Lenz's law, what kind of magnetic field does an eddy current create?

    <p>Magnetic field that opposes the original change in magnetic field</p> Signup and view all the answers

    How are eddy current brakes employed?

    <p>To quickly stop rotating power tools when they are turned off</p> Signup and view all the answers

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