Key Concepts in Electromagnetic Induction and Fields

Classified in Physics

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  1. Scientist credited with the law of electromagnetic induction: Michael Faraday
  2. Faraday's first discovery regarding electromagnetic induction: A changing current in one coil induces a current in another coil.
  3. Factor influencing the induced EMF in a coil near a moving magnet: The speed at which the magnetic flux through the coil changes.
  4. Physical quantity measuring the amount of magnetic field crossing a surface: Magnetic flux
  5. Factor affecting magnetic flux through a surface: The angle between the surface and the magnetic field lines.
  6. Phenomenon of electric current generation in a coil due to varying magnetic flux: Electromagnetic induction
  7. Factor determining the induced EMF in a coil: The rate at which the magnetic flux through it changes.
  8. Magnitude directly proportional to the rate of change of magnetic flux through a loop: Induced Electromotive Force (EMF)
  9. Scientist credited with the rule for determining the direction of induced current: Heinrich Lenz
  10. Fundamental principle underlying Lenz's Law: Conservation of Energy
  11. One cause of induced EMF in a coil: A changing magnetic field.
  12. Maxwell's fundamental theoretical conclusion: A changing electric field creates a magnetic field.
  13. Potential difference in a conductor moving through a time-varying magnetic field: Motional EMF
  14. Operating principle of common electric generators: Induction of EMF by rotating coils in a magnetic field.
  15. Operating principle of transformers: Changing magnetic flux through the windings (mutual induction).
  16. Phenomenon delaying constant current in a coil connected to a DC source: Self-induction (producing a back EMF).
  17. Factor affecting self-induced EMF in a coil: The rate of change of current within the coil itself.
  18. Factor determining the energy stored in a coil's magnetic field: Current intensity (squared).
  19. Factor influencing the inductance of a coil: Number of turns.
  20. Propagation of oscillating electric and magnetic fields: Electromagnetic wave.

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