Who among the following played a crucial role in understanding electromagnetism when he accidentally discovered that a compass needle got deflected when an electric current passed through a metallic wire placed nearby?
Who among the following played a crucial role in understanding electromagnetism when he accidentally discovered that a compass needle got deflected when an electric current passed through a metallic wire placed nearby?
Solution
✅ Correct Option: 2
Hans Christian Oersted observed in 1820 that a current-carrying wire deflected a nearby compass needle, showing that electricity produces a magnetic field and founding electromagnetism.
Wohler synthesised urea, Joule worked on heat and energy, and Einstein is known for relativity.
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