alleryWho noticed that a current in a wire deflects a compass needle?
AOersted
BAmpere
CFaraday
DMaxwell
Answer & Solution
Correct answer: A. Oersted
1. The observation came during a lecture demonstration.
2. Hans Christian Oersted noticed the deflection.
3. So the correct answer is Oersted.
_Source: syllabus Physics Part I, Ch 4 'Moving Charges and Magnetism'_
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