Ampere's Law

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Ampere's Law

by KirtB » Tue Jul 25, 2017 5:43 pm

Ampere's Law, December 1972 Popular Electronics

Here is a brief but informative introduction to the story behind French physicist Andre Marie Ampere's discovery of the eponymously named law that governs the relationships between current flow and a magnetic field. As most RF Cafe visitors know, both a steady state and time-varying current will generate a magnetic field, but only a time-varying magnetic field can generate a current flow. In less than a week after witnessing Hans Christian Ørsted's demonstration of a current-carrying wire influencing a compass needle, Ampere discovered the Right-Hand Rule of current flow direction based on the direction of the magnetic field ...