Aviation Mechanic - General, Airframe, and Powerplant › I. General › Task A. Fundamentals of Electricity and Electronics

AM.I.A.K7e

Knowledge

Electrical laws and theory.

Lenz's Law

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Get a short, cited explanation of this element written from the FAA handbooks: the core idea, the numbers that matter, common test traps, and a quick self-check.

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Aviation Maintenance Technician Handbook - Powerplant p. 4-3
Chapter 4: Engine Ignition & Electrical Systems › High-Tension Magneto System Theory of Operation › Primary Electrical Circuit
primary circuit, it opposes any decrease in the magnetic flux in the core. This is in accordance with Lenz’s Law that states: “An induced current always flows in such a direction that its magnetism opposes the motion ... change that induced it.” (For a review of Lenz’s Law, refer to the Aviation Maintenance Technician—General Handbook, FAA-H-8083-30). Thus, the current flowing in the primary circuit holds the flux in the core at a high…
Aviation Maintenance Technician Handbook - General p. 12-44
Chapter 12: Fundamentals of Electricity & Electronics › Generator Principles
coil and the magnetic field. These results obey a law first stated by the German scientist, Heinrich Lenz. Lenz’s Law states that the induced current caused by the relative motion of a conductor and a magnetic field always flows…
Aviation Maintenance Technician Handbook - General p. 12-57
Chapter 12: Fundamentals of Electricity & Electronics › Inductance › Self-Inductance
gives the direction of the induced emf resulting from electromagnetic induction. This is commonly known as Lenz’s Law, which states: The emf induced in an electric circuit always acts in such a direction that the current it drives around…