What structural component did Michael Faraday use to concentrate magnetic flux between his two coils?
Answer
A soft iron ring
Faraday utilized a soft iron ring as the core for his two coils of wire. This iron ring functioned as a magnetic circuit that efficiently concentrated and directed the magnetic flux generated by the primary coil, ensuring that the magnetic influence reached the secondary coil. This setup served as the essential prototype for the later development of transformer technology.

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Faraday's first transformer - IGCSE Physics - YouTube
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