alleryIron filings sprinkled around a current-carrying wire arrange in:
AContinuous circles
BConcentric circles
CConsecutive circles
DContiguous circles
Answer & Solution
Correct answer: B. Concentric circles
1. The pattern shows the shape of the field.
2. Iron filings arrange themselves in concentric circles with the wire as centre.
3. So the correct answer is concentric circles.
_Source: syllabus Physics Part I, Ch 4 'Moving Charges and Magnetism'_
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