Question

Consider the following statements regarding the network shown in the figure.

1) The equivalent resistance of the network between points $A$ and $B$ is independent of value of $G$.
2) The equivalent resistance of the network between points $A$ and $B$ is $\frac{4}{3}R$
3) The current through $G$ is zero
Which of the above statements is/are TRUE?

• A. 1) alone
• B. 2) alone
• C. 2) and 3)
• D. 1), 2) and 3)

Answer 1

Answer: (D)

$R_{\text{eff }}=\frac{(P+Q)(R+S)}{(P+Q+R+S)}$
$R_{\text{eff }}=\frac{4}{3}R$