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QPages 198-203: Q30: HC Verma: Concepts of Physics - Volume 2 Electric Current in Conductors Pages 198-203: Q30 Solution: Find the equivalent resistance of the network shown in the…
⚠️ Common Exam Traps & Conceptual Pitfalls
Students often fail to verify the bridge balance condition ($R_1/R_2 = R_3/R_4$) before removing the central resistor, leading to incorrect series-parallel combinations. Always confirm the potential difference across the central branch is zero to justify ignoring its resistance.
Find the equivalent resistance of the network shown in the figure between the points a and b.
Step-by-Step Verified Solution
**Answer:** .
**Step-by-Step Explanation:**
The network is a balanced bridge. The central resistor carries no current. Equivalent resistance is [citation:2][citation:5].
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