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Question: Answered & Verified by Expert
In a series circuit $R=300 \Omega, L=0.9 \mathrm{H}, C=2.0 \mu \mathrm{F}$ and $\omega=1000 \mathrm{rad} / \mathrm{sec}$. The impedance of the circuit is
PhysicsAlternating CurrentJEE Main
Options:
  • A $1300 \Omega$
  • B $900 \Omega$
  • C $500 \Omega$
  • D $400 \Omega$
Solution:
2900 Upvotes Verified Answer
The correct answer is: $500 \Omega$
For series $R-L-C$ circuit, $Z=\sqrt{R^2+\left(X_L-X_C\right)^2}$
$=\sqrt{(300)^2+\left(1000 \times 0.9-\frac{10^6}{1000 \times 2}\right)^2}=500 \Omega$

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