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NEET2024PhysicsCurrent ElectricityActual

A uniform metal wire of length / has 10 resistance. Now this wire is stretched to a length 2 / and then bent to form a perfect circle. The equivalent resistance across any arbitrary diameter of that circle is

Options

  1. A10
  2. B5
  3. C40
  4. D20

Correct answer

A. 10

Step-by-step solution

R₀=10 After stretching its length upto 2l R₁=n^2 R₀=4 R₀=40 R_ A B = 20 20 20+20 =10

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