Question

Calculate equivalent resistance between $X$ and $Y$. Each resistance is $1\Omega$.

• A. $\frac{11}{18}\Omega$
• B. $\frac{7}{8}\Omega$
• C. $2\Omega$
• D. $4\Omega$

Answer 1

The correct option is A $\frac{11}{18}\Omega$

After simplyfying the circuit, we finally get
$R_{XY}=\frac{11}{7}\Omega ||1\Omega$
$\Rightarrow R_{XY}=\frac{11}{18}\Omega$