At the resonant frequency, the current in L (and the current in C) can reach high values, therefore the voltages across those elements can become high. (High in comparison to the values well away from the resonant frequency.) Where does this high current come from, because the current drawn from the external circuit actually becomes minimal at resonance.Toyona10 said:I understood how it responds by varying the other parameters (L , C...) but how does it respond to changes in frequency? (Honestly speaking, I barely get a thing they're trying to say in my textbook)
Parallel resonance is a phenomenon that occurs in an electrical circuit when the inductive reactance and capacitive reactance are equal. This results in a high current and low impedance in the circuit, allowing it to easily absorb and release energy.
In parallel resonance, frequency is varied by adjusting the value of the capacitance or inductance in the circuit. This can be done by changing the physical components or by using a variable capacitor or inductor.
Parallel resonance has many practical applications, such as in radio frequency circuits, filters, and power factor correction. It is also used in electronic devices like televisions, radios, and computers.
In parallel resonance, the voltage across the circuit is at its maximum value. This is because the impedance of the circuit is at its minimum, allowing more current to flow through the circuit and resulting in a higher voltage.
Parallel resonance can significantly affect power transfer in a circuit. When a circuit is in parallel resonance, the current and voltage are in phase, which results in a high power factor. This means that more power can be transferred efficiently through the circuit.