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