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JEE Main202624 January 2026Evening ShiftPhysicsCurrent ElectricityActual

A regular hexagon is formed by six wires each of resistance r and the corners are joined to the centre by wires of same resistance. If the current enters at one corner and leaves at the opposite corner, the equivalent resistance of the hexagon between the two opposite corners will be

Options

  1. A3 4 r
  2. B4 5 r
  3. C3 5 r
  4. D^ 5 8 r

Correct answer

B. 4 5 r

Step-by-step solution

R_ eq = 2R 4R 3 2R + 4R 3 = 8R^2 10R = 4 5 R

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