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KVPY2012PhysicsCurrent Electricity

As shown in the figure below, a cube is formed with ten identical resistance R (thick lines) and two shorteing wires (dotted lines) along the arms AC and BD. Resistance between point A and B is-

Options

  1. AR / 2
  2. B5 R / 6
  3. C3 R / 4
  4. DR

Correct answer

A. R / 2

Step-by-step solution

The given circuit can be simplified into two wheatstone bridge in parallel

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