Why is current maximum at resonant frequency in series circuit and minimum in parallel resonant circuit?

Resonant Current In series RLC circuit current, I = V / Z but at resonance current I = V / R, therefore the current at resonant frequency is maximum as at resonance in impedance of circuit is resistance only and is minimum.

Why current is maximum in series resonance?

Since the current flowing through a series resonance circuit is the product of voltage divided by impedance, at resonance the impedance, Z is at its minimum value, ( =R ). Therefore, the circuit current at this frequency will be at its maximum value of V/R as shown below.

Why current is minimum in parallel LCR?

In parallel RLC circuit, at resonance condition admittance is purely resistive and it is equal to R. It is the minimum admittance or maximum impedance condition. Hence the current at this condition is minimum.

Why parallel circuit is known as current magnification though it has minimum current at the time of resonance?

Current flowing through Capacitor Note − Parallel resonance RLC circuit is called as current magnification circuit. Because, the magnitude of current flowing through inductor and capacitor is equal to Q times the input sinusoidal current I.

Why current is maximum in series LCR circuit?

In a series LCR AC circuit, the current is maximum when the impedance is equal to the resistance, thus, option (B) is correct.

In which circuit current is maximum series or parallel?

In a parallel circuit, the potential difference across each of the resistors that make up the circuit is the same. This leads to a higher current flowing through each resistor and subsequently the total current flowing through all the resistors is higher.

In which resonant circuit do we find current magnification?

R-L-C parallel circuit
By means of the parallel resonant circuit, the current taken from the supply can be magnified. This type of resonance is called current resonance. Quality factor of R-L-C parallel circuit is the current magnification in the circuit at resonance.

When current is maximum in LCR circuit?