What constitutes the invention of the principle of the transformer?
Answer
The identification of mutual induction between two circuits
The invention of the principle of the transformer is defined by the first person to conceive, demonstrate, and publish the physical law allowing for magnetic energy transfer between electrically isolated circuits. Faraday achieved this with his 1831 iron ring experiment, establishing the physical mechanism that allows transformers to function, even though the practical, commercially viable device took further engineering efforts by others.
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Faraday's first transformer - IGCSE Physics - YouTube
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