- #1
The question should be 'which ammeter may/could read zero ampere?'.Jahnavi said:May be I am missing something very fundamental .
cnh1995 said:The question should be 'which ammeter may/could read zero ampere?'.
There is a specific value of ω for which one of the meters would read zero.
Have you studied electrical resonance?Jahnavi said:Could you please elaborate .
cnh1995 said:Have you studied electrical resonance?
What will happen at resonant frequency in this circuit? What is the effective impedance of this circuit at resonance?Jahnavi said:In series LCR circuit . But this is different .
Resonance occurs at a particular frequency where Xc=XL. In this circuit, what would be the equivalent reactance at resonance?Jahnavi said:Sorry ! As I said I know only series LCR circuit .
cnh1995 said:In this circuit, what would be the equivalent reactance at resonance?
No, the reactances are in parallel here.Jahnavi said:Equivalent reactance should be 0 . The net impedance should be equal to the resistance but since there is no resistance R in this circuit , net impedance Z will also be 0 .
cnh1995 said:No, the reactances are in parallel here.
Yes.Jahnavi said:Should the equivalent reactance be infinite ?
cnh1995 said:Yes.
Yes.Jahnavi said:OK . In that case current in A3 will be zero at resonance ?
cnh1995 said:Yes.
cnh1995 said:Here you can see that the source doesn't supply any current. This means the energy keeps oscillating between L and C and no power is drawn from the source.
Jahnavi said:Is the frequency altered continuously till the circuit resonates at a particular frequency ?
I am asking this because some current has to flow through A3 initially so that energy could be stored in L/C .
That you need to see using transient analysis.Jahnavi said:Would you say there will be no current in the circuit anytime anywhere
Yes.Jahnavi said:That means , in the transient period , there will be non zero current in A3 even at resonant frequency ?
Here, after doing some math, you can seecnh1995 said:Yes.
I'll try to find the exact equation for current once I reach home.
An AC voltage source driving an inductor and a capacitor is a type of electronic circuit where an alternating current (AC) voltage is applied to an inductor and a capacitor in series. This creates a resonant circuit, which can be used in various applications such as power supplies, filters, and oscillators.
An inductor is a passive electronic component that stores energy in the form of a magnetic field when an electric current passes through it. In an AC voltage source driving an inductor and a capacitor, the inductor serves to store the energy from the AC voltage and release it in a controlled manner, creating a smooth AC waveform.
A capacitor is a passive electronic component that stores energy in the form of an electric field. In an AC voltage source driving an inductor and a capacitor, the capacitor helps to smooth out the AC waveform by storing and releasing energy, allowing for a more stable output voltage.
Resonance in an AC voltage source driving an inductor and a capacitor refers to the state where the inductor and capacitor are exchanging energy back and forth at a specific frequency. This frequency is determined by the values of the inductor and capacitor, and when the AC voltage source is at this frequency, the circuit will experience a high level of resonance.
An AC voltage source driving an inductor and a capacitor can be used in various applications such as power supplies, filters, and oscillators. It is also commonly used in radio frequency (RF) circuits, where it can be used to select and amplify specific frequencies. Additionally, it can be used in resonant transformers for high voltage applications, and in electronic ballasts for fluorescent lights.