- #1

Albertgauss

Gold Member

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- TL;DR Summary
- LRC AC inductors capacitor magnetic fields electric fields at which frequencies are fields created

Hi all,

In an LRC AC series circuit, at which frequencies are where you are mainly dumping your generator/current energy into capacitor to create electric fields or into the inductor to create magnetic fields? So, for example, at low frequencies, f --> 0, the impedance of the inductor goes to 0 and the phase angle is +90 degrees, yet the impedance of the capacitor (1/wC) is ∞ . Is my circuit creating and destroying magnetic fields for the inductor, or is it creating and destroying electric fields in the capacitor? On the one hand, the inductor is acting like a short, but the capacitor is blocking all the current, so I'm not sure how to reason this out. I also need help for the same case for high freqs at phase angle -90 degrees. Which of these cases is called an "inductive circuit" and which case is a "capacitve circuit"?

In an LRC AC series circuit, at which frequencies are where you are mainly dumping your generator/current energy into capacitor to create electric fields or into the inductor to create magnetic fields? So, for example, at low frequencies, f --> 0, the impedance of the inductor goes to 0 and the phase angle is +90 degrees, yet the impedance of the capacitor (1/wC) is ∞ . Is my circuit creating and destroying magnetic fields for the inductor, or is it creating and destroying electric fields in the capacitor? On the one hand, the inductor is acting like a short, but the capacitor is blocking all the current, so I'm not sure how to reason this out. I also need help for the same case for high freqs at phase angle -90 degrees. Which of these cases is called an "inductive circuit" and which case is a "capacitve circuit"?