Question

The values of $X_L,X_C$ and $R$ in an AC circuit are 8 $\Omega$, 6$\Omega$ and 10 $\Omega$ respectively. The total impedance of the circuit

• A. $10.2\Omega$
• B. $12.2\Omega$
• C. $10\Omega$
• D. $24.4\Omega$

Answer 1

Answer: (A)

$10.2\Omega$

Total impedance $=R+j(X_L-X_C)$
$=10+j(8-6)=10+j2$
$=10.2\measuredangle {tan}^{-1}\left(\frac{2}{10}\right)$