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NEETPhysicsCurrent Electricity

Two conductors are made of the same material and have the same length. Conductor A is a solid wire of diameter 1mm. Conductor B is a hollow tube of outer diameter 2mm and inner diameter 1mm. What is the ratio of the resistance of Conductor A (R A ) to the resistance of Conductor B (R B )?

Options

  1. A1 : 1
  2. B1 : 2
  3. C2 : 3
  4. D3 : 1

Correct answer

D. 3 : 1

Step-by-step solution

Correct Option is : (D) 3 : 1

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