All Problems

Electric Oscillations

Problem 4.143

An alternating current of frequency \(\omega=314 \mathrm{~s}^{-1}\) is fed to a circuit consisting of a capacitor of capacitance \(C=73 \mu \mathrm{F}\) and an active resistance \(R=100 \Omega\) connected in parallel. Find the impedance of the circuit.

Reveal Answer
Z=R/1+(ωCR)2=40ΩZ=R / \sqrt{1+(\omega C R)^{2}}=40 \Omega