Yahoo Answers is shutting down on May 4th, 2021 (Eastern Time) and beginning April 20th, 2021 (Eastern Time) the Yahoo Answers website will be in read-only mode. There will be no changes to other Yahoo properties or services, or your Yahoo account. You can find more information about the Yahoo Answers shutdown and how to download your data on this help page.
RLC Circuits/Max Voltage?
Consider an RLC circuit that is driven by an AC source with an adjustable frequency. Is possible for the maximum voltage drop across the capacitor to exceed the maximum voltage?
- BonyLv 59 years agoFavorite Answer
Consider a series RLC circuit at frequency f,
having R = 10Ω, Xʟ =110Ω, and Xc= 100Ω
What Vin, is required for a series current of 1A? .
= √ (R² + (Xʟ - Xc)²) . . . Eq1
= √ (10² + (110 - 100)²)
= √ (10² + 10²)
= 10√2 Ω = 14.14 Ω
Vin = IZ = 1A x 14.14 Ω = 14.14 V
Vc = IXc = 1A x 100Ω = 100V
Result Vc >> Vin = Required Answer
Additionally, note from Eq1, as R reduces,
and Xʟ becomes = Xc, Z becomes very low Ω.
Very low Z results in much higher current through all components.
Then Vc = IXc becomes very large. Vc >>> Vin
Has this helped?
Clarification of any point will be provided, if requested.Source(s): Basic AC circuit calculations
- vaibahvLv 44 years ago
the version between voltage and contemporary is that voltage is critical to make a contemporary flow trough it, voltage measured in volt regardless of if contemporary is while an electric powered cost moved around a circuit and contemporary measured in amperes it is the version between voltage and contemporary.