WBJEE · Physics · Current Electricity
In the circult shown in the figure all the resistance are identical and each has the value \(r \Omega\). The equivalent resistance of the combination between the points \(A\) and \(B\) will remain unchanged even when the followring pairs of points marked in the figure are connected through a resistance \(\mathbb{R}\). 
- A 2 and 6
- B 3 and 6
- C 4 and 7
- D 4 and 6
Answer & Solution
Correct Answer
(C) 4 and 7
Step-by-step Solution
Detailed explanation
The circuit diagram is as shown below, According to question, when given pair of point in options are connected through a resistance \(R\), then equivalent resistance between point \(A\) and \(B\left(R_{A}\right)\) remains unchanged. It is only possible when current. does not…
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