Frequency of a wave and capacitance

AI Thread Summary
The discussion centers on whether the frequency of electromagnetic waves emitted by a discharging capacitor increases with capacitance. It is noted that the discharge method significantly influences wave emission; a slow discharge may not produce noticeable electromagnetic waves, while a quick discharge can create them, evidenced by arcing. The relationship between capacitance and frequency is clarified, indicating that while larger capacitors store more energy, this does not directly affect the frequency of the emitted waves. The conversation emphasizes the complexity of capacitor behavior during discharge. Understanding these dynamics is crucial for accurate interpretations of electromagnetic wave generation.
chamsy
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Hi,

I have read that as a capacitor discharges, it emits electromegnetic waves. Plz tell me does the frequency of these waves increase as the capacitance of the capacitor increases.

Thanks a lot,
Chamal.
 
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Originally posted by chamsy
Hi,

I have read that as a capacitor discharges, it emits electromegnetic waves. Plz tell me does the frequency of these waves increase as the capacitance of the capacitor increases.

Thanks a lot,
Chamal.

I think that what you stated pretty much is an example of a little knowledge can be a dangerous thing. There are MANY things that can happen when a capacitor discharges. It just depends on HOW it discharges. On its own, a capacitor discharging slowly through its own leakage will not emit any noticeable EM waves. Take a capacitor and charge it, then quickly discharge it by shorting it leads, then yes, it will emit EM waves because of the arcing. It can easily be proven by doing this next to an AM radio. You will hear it in the speaker.
 
One thing average didn't answer was the capacity question. The larger the capacitor ( in terms of Farads ) is the more energy it stores.This tho has no baring on the question of Fq
 
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