What happens to the current in this RLC series circuit as the frequency increases?

In series RLC circuit, the total voltage is the phasor sum of voltage across resistor, inductor and capacitor. Now when the frequency is further increased, ZL increases and with increase in ZL, the circuit current reduces and then the current drops finally to zero as frequency becomes infinite.

What is source frequency in LCR circuit?

Keeping the source frequency equal to the resonating frequency of the series LCR circuit, if the three elements L, C and R are arranged in parallel, show that the total current in the parallel LCR circuit is minimum at this frequency. Hence, current will be minimum at resonant frequency in the parallel LCR circuit.

What is a source frequency?

Source frequency is the frequency of the ac current that is driving the circuit. This can be any value. But remember that only when source frequency equals to the resonance frequency,the phenomenon of resonance happen.

How do you find the frequency when given the period?

In the frequency formula, f = 1/T, T is the time period. T refers to the time to complete one cycle (in seconds). Time period is inversely proportional to the frequency.

Is resonance frequency is independent of capacitance of LCR circuit?

Short answer: All other things remaining equal, bringing capacitor plates closer together (reducing ‘d’) will INCREASE the capacitance & thus DECREASE the resonant frequency of the LCR circuit – whether series or parallel. Resonant frequency = 1 divided by (2 pi times the square root of capacitance times inductance).

How do the series resonant circuit behave under the resonance condition?

Resonance occurs when XL = XC and the imaginary part of the transfer function is zero. At resonance the impedance of the circuit is equal to the resistance value as Z = R. At low frequencies the series circuit is capacitive as: XC > XL, this gives the circuit a leading power factor.

What happens resonance frequency?

Resonant frequency is the oscillation of a system at its natural or unforced resonance. Resonance occurs when a system is able to store and easily transfer energy between different storage modes, such as Kinetic energy or Potential energy as you would find with a simple pendulum.

What is an LCR circuit and its analysis?

With this context, let us discuss the LCR circuit and its analysis in detail. An LCR circuit, also known as a resonant circuit, tuned circuit, or an RLC circuit, is an electrical circuit consisting of an inductor (L), capacitor (C) and resistor (R) connected in series or parallel.

How do you reduce the impedance of an LCR circuit?

Impedance can be minimized by making the applied AC frequency equal to the resonant frequency of the LCR circuit. When the frequencies are equalized, the inductive and capacitive reactance becomes almost zero, and only resistance remains. This is the only concept behind resonance.

What is the effect of external frequency on an LCR circuit?

But if we supply an external frequency of 200 kHz, the current in the circuit will become maximum. So when an external frequency of equal resonant frequency of the LCR circuit is applied, then the circuit completely behaves like an R circuit (as if there is no inductor or capacitor ).

What is the phase difference between capacitor and resistor in series LCR?

What is the phase difference between the current in the capacitor and the current in the resistor in a series LCR circuit? The voltage across the capacitor lags the current in the circuit by 900. Hence, the phase difference between the voltage across the capacitor and the current in the circuit is 900.