Question

In the circuit of Fig. the equivalent impedance seen across terminals A, B is

• A. $\left(16/3\right)\Omega$
• B. $\left(8/3\right)\Omega$
• C. $(8/3+12j)\Omega$
• D. None of the above

Answer 1

The correct option is B $\left(8/3\right)\Omega$

The bridge is balanced
$Z_{eq}=\left(2||4\right)+\left(2||4\right)$
$Z_{eq}=\frac{2\times 4}{2+4}+\frac{2\times 4}{2+4}=\frac{4}{3}+\frac{4}{3}=\frac{8}{3}\Omega$