Capacitance Vs Frequency and Voltage

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Homework Help Overview

The discussion revolves around the relationship between capacitance, frequency, and voltage, specifically exploring how capacitance is affected by changes in frequency and the underlying reasons for this behavior.

Discussion Character

  • Exploratory, Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • Participants are attempting to clarify the relationship between capacitance and voltage, as well as the effect of frequency on capacitance. Questions about standard equations relating charge, capacitance, and voltage are raised, alongside requests for detailed explanations rather than mathematical derivations.

Discussion Status

Some participants are seeking a deeper understanding of the theoretical concepts behind the observed behavior of capacitance with frequency, while others emphasize the importance of showing work before receiving guidance. There is an ongoing exploration of different interpretations and experimental setups.

Contextual Notes

Participants are encouraged to provide details about their experimental setups and measurements, as there seems to be a lack of consensus on the relationship between capacitance and frequency. The forum's rules emphasize a learning-first approach, discouraging direct answers without prior effort from the original poster.

wisdomsearch
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Would you kindly help me in describing the relationship between

1. capacitance and voltage and why?

and

2. Why does with increase in frequency the capacitance decreases ?
 
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-1- What is the equation relating the charge on a capacitor to the capacitance and voltage? It is a standard equation, and should be there in your textbook.

-2- What capacitance decreases with frequency? You need to be more detailed in this question, and you need to try to answer it for us. We do not give out answers here at the PF. After you show your work, we can try to offer tutorial help.

(Please re-read the "Rules" link at the top of the page.)
 
Iam aware of the equation.I was actually looking for an explanation not mathematical to understand the logic behind the decrease in the capacitance with the increase in frequency.I have made capacitor measurements and observed the behaviour in the similar manner . Now i need to understand the theory relating to the inverse relationship between the capacitance and the frequency measurements.
 
wisdomsearch said:
Iam aware of the equation.I was actually looking for an explanation not mathematical to understand the logic behind the decrease in the capacitance with the increase in frequency.I have made capacitor measurements and observed the behaviour in the similar manner . Now i need to understand the theory relating to the inverse relationship between the capacitance and the frequency measurements.

There is no relationship like that which I'm aware of. What was your experimental setup, and what were your measured data?
 

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