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Current Electricity question

2021 · 26 Aug · Shift 1 · Q58
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  5. /2021 · 26 Aug · Shift 1 · Q58

Current Electricity question

2021 · 26 Aug · Shift 1 · Q58

JEE MainPhysicsCurrent ElectricityMCQ+4 / −1
What equal length of an iron wire and a copper-nickel alloy wire, each of 2 mm diameter connected parallel to give an equivalent resistance of 3 Ω\OmegaΩ? (Given resistivities of iron and copper-nickel alloy wire are 12 μΩ\mu\OmegaμΩ and 51 μΩ\mu\OmegaμΩ cm respectively)
  1. A
    82 m
  2. B
    97 m
  3. C
    110 m
  4. D
    90 m
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