Solved UPSC CDS/OTA Question
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Q · Current ElectricityMedium · 45s
Which one of the following is the correct unit for resistivity? Option: 39
TopicCurrent Electricity
Question Typemultiple choice
DifficultyMedium
Marking+1 / −0.33
Test Duration30 min
Step-by-Step Solution
The complete worked solution.
Every step explained - no skipped algebra.
Resistivity (ρ) = Resistance × Area / Length → SI unit: ohm-meter.
39
Final Answer: Option A - Ohm-meter
39