RLC circuit with two angular frequencies

In summary, the question asks for the values of the resistor and capacitor in a series circuit with an inductor, when an alternating voltage and current with different angular frequencies are given. This appears to be a typo, as all currents and voltages in linear circuits must have the same frequency.
  • #1
cool_stuff_lol
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A resistor, an inductor of inductance value of 0.02H and a capacitor are connected in series. When an alternating voltage of 200sin(1000t-10°) is applied to the series combination, the current flowing through the circuit is 20√2sin(2000t-20°). Determine the values of resistor and capacitor.

Reactance of inductor= wL
Reactance of capacitor= 1/wC

I don't know how to attempt this question. The voltage and current have different angular frequencies so how do we calculate the impedance using phasors or with some other method?
 
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  • #2
Hello cool_stuff_lol, Welcome to Physics Forums.

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cool_stuff_lol said:
A resistor, an inductor of inductance value of 0.02H and a capacitor are connected in series. When an alternating voltage of 200sin(1000t-10°) is applied to the series combination, the current flowing through the circuit is 20√2sin(2000t-20°). Determine the values of resistor and capacitor.

Reactance of inductor= wL
Reactance of capacitor= 1/wC

I don't know how to attempt this question. The voltage and current have different angular frequencies so how do we calculate the impedance using phasors or with some other method?

This looks like a typo in the question statement. There are no non-linear components in the described circuit which could result in frequency harmonics being generated.

For linear circuits, all currents and voltages must have the same frequency at steady-state when all sources have the same frequency (here "all" is one: the voltage source).
 

Related to RLC circuit with two angular frequencies

1. What is an RLC circuit with two angular frequencies?

An RLC circuit is an electrical circuit consisting of a resistor (R), an inductor (L), and a capacitor (C). The circuit has two angular frequencies, which refer to the rate at which the circuit's voltage and current oscillate. The two angular frequencies can be calculated using the formula ω = 1/√(LC) ± R/2L, where ω is the angular frequency, L is the inductance, C is the capacitance, and R is the resistance.

2. What is the significance of having two angular frequencies in an RLC circuit?

The presence of two angular frequencies in an RLC circuit allows for a more complex and varied oscillation of voltage and current. This can result in different behaviors of the circuit, such as resonance, oscillation, or damping. The two angular frequencies also allow for a wider range of frequencies to be produced by the circuit, making it more versatile for different applications.

3. How do the values of R, L, and C affect the two angular frequencies in an RLC circuit?

The values of R, L, and C directly affect the two angular frequencies in an RLC circuit. The angular frequencies are inversely proportional to the values of L and C, meaning that as these values increase, the angular frequencies decrease. On the other hand, the angular frequencies are directly proportional to the value of R, meaning that as R increases, the angular frequencies also increase.

4. What is the difference between the two angular frequencies in an RLC circuit?

The two angular frequencies in an RLC circuit are referred to as the resonant frequency and the anti-resonant frequency. The resonant frequency is the frequency at which the circuit will have the maximum amplitude of oscillation, while the anti-resonant frequency is the frequency at which the circuit will have the minimum amplitude of oscillation.

5. How can an RLC circuit with two angular frequencies be used in practical applications?

An RLC circuit with two angular frequencies has various practical applications, including in radio frequency (RF) circuit design, signal filtering, and power regulation. The circuit can also be used in electronic tuning systems, oscillators, and frequency mixers. Its ability to produce a wide range of frequencies and its resonance properties make it a valuable component in many electronic devices and systems.

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