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Self-induction was discovered by Michael Faraday in 1831. He demonstrated the phenomenon while studying electromagnetic induction. Faraday found that when the current in a coil of wire changes, it induces an electromotive force (EMF) within the same coil. This phenomenon is called self-induction because the coil "induces" a voltage on itself due to the changing current.
Later, the concept was formalized by Joseph Henry and others, but Faraday is generally credited with the discovery since his work laid the foundation for the study of electromagnetism. The unit of inductance (the property that quantifies self-induction) is named the henry (H) in honor of Joseph Henry.
Later, the concept was formalized by Joseph Henry and others, but Faraday is generally credited with the discovery since his work laid the foundation for the study of electromagnetism. The unit of inductance (the property that quantifies self-induction) is named the henry (H) in honor of Joseph Henry.