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JEE Main20257 Apr 2025Morning ShiftPhysicsCurrent ElectricityActual

A wire of resistance R is bent into a triangular pyramid as shown in figure with each segment having same length. The resistance between points A and B is R / n . The value of n is :

Options

  1. A16
  2. B14
  3. C10
  4. D12

Correct answer

D. 12

Step-by-step solution

As r= R 6 (As balanced wheat stone bridge is formed) Now, Equivalent resistance between A and B can be written as 1 R _ AB = 1 2 r + 1 2 r + 1 r = 2 r R _ AB = R 12

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