alleryIn which year was that observation made?
A1840
B1820
C1830
D1810
Answer & Solution
Correct answer: B. 1820
1. It came about 200 years after electricity and magnetism were first known.
2. Oersted noticed it in the summer of 1820.
3. So the correct answer is 1820.
_Source: syllabus Physics Part I, Ch 4 'Moving Charges and Magnetism'_
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