GATE EC 2015 Set 1 — Question 17
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Network Theory → Circuit Fundamentals & Theorems → Wye-Delta Transformation
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Question
In the network shown in the figure, all resistors are identical with . The resistance (in ) of the network is ________.
Correct answer
99.5 to 100.5
Solution
The given network is a symmetric lattice of resistors. For this specific configuration, the equivalent resistance can be found using symmetry or star-delta transformations. For this bridge-of-bridges structure, the equivalent resistance is .
Given , we have:
Given , we have:
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