Q

If a copper wire and an iron wire of the same length and area are compared, which is the one with higher resistance?

RRB Group D 19 Aug, 2026 (9:00 AM - 10:30 AM) 2026
✓ Answer: C Iron wire
For wires of the same length and cross-sectional area, resistance depends on resistivity. Iron has higher resistivity than copper, so its resistance is greater.
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