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Question: Answered & Verified by Expert
As shown in the figure below, a cube is formed with ten identical resistance $\mathrm{R}$ (thick lines) and two shorteing wires (dotted lines) along the arms AC and BD.


Resistance between point $\mathrm{A}$ and $\mathrm{B}$ is-
PhysicsCurrent ElectricityKVPYKVPY 2012 (SB/SX)
Options:
  • A $\mathrm{R} / 2$
  • B $5 \mathrm{R} / 6$
  • C $3 \mathrm{R} / 4$
  • D $\mathrm{R}$
Solution:
1802 Upvotes Verified Answer
The correct answer is: $\mathrm{R} / 2$
The given circuit can be simplified into two wheatstone bridge in parallel

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