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JEE Main 2022 Physics question

PhysicsCurrent ElectricityJEE Main 2022

Eight copper wire of length and diameter d are joined in parallel to form a single composite conductor of resistance R. If a single copper wire of length have the same resistance (R) then its diameter will be d.

Answer: 4

Solution

The resistance of one wire is , so the eight in parallel give . A single wire of

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Question ID VK-024771