Finding the voltage in this AC circuit

In summary, the conversation discusses how to find the value of Vx in a circuit by using mesh analysis and Gaussian elimination. It is suggested to add the voltages of the two 10uF capacitors, which may not be in series topologically but are in series in the KVL sense. It is also mentioned that Vs is the voltage differential between two nodes and that finding the individual voltages at each node can also help solve for Vx.
  • #1
edsoneicc
11
0

Homework Statement


2i11r14.jpg


Homework Equations


KVL at that loop

The Attempt at a Solution


I can easily solve all the individual current and voltages in this circuit using Mesh analysis and Gaussian Elimination. But how do I get Vx? I can simply add the voltages of the two 10uF capacitors if they are in series. But they are not in series. I thought maybe if I write a KVL equation on that loop, I can solve for Vx but that equation means simply adding the voltages. I'm confused.
 
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  • #2
The two capacitors you have in mind may not be in series in the sense of the topological definition for series components, but their potentials are certainly in series in the KVL sense. So you can simply sum them as you suggest.
 
  • #3
Vs is the voltage differential between that node on the far right and the node below the voltage source.If you can find the individual voltages at each node, you can simply subtract the node voltages. Alternatively, find the voltage drop across the two 10 uF caps at the bottom of the schematic.
 

Related to Finding the voltage in this AC circuit

1. How do you calculate the voltage in an AC circuit?

The voltage in an AC circuit can be calculated using the equation V = I * Z, where V is the voltage, I is the current, and Z is the impedance of the circuit. Alternatively, if the circuit contains only resistive elements, the voltage can be calculated using the equation V = I * R, where R is the resistance of the circuit.

2. What is the difference between AC and DC voltage?

AC (alternating current) voltage changes direction periodically, while DC (direct current) voltage flows in only one direction. AC voltage is typically used for power transmission because it can be easily converted to different voltages using transformers, while DC voltage is commonly used for electronic devices.

3. How does the frequency of the AC current affect the voltage in a circuit?

The frequency of the AC current does not directly affect the voltage in a circuit. However, it can affect the impedance of the circuit, which in turn can affect the voltage. Higher frequencies may result in higher impedance and therefore a lower voltage, while lower frequencies may result in lower impedance and a higher voltage.

4. What is the difference between peak and RMS voltage in an AC circuit?

Peak voltage is the maximum voltage reached in an AC circuit, while RMS (root mean square) voltage is the equivalent DC voltage that would produce the same amount of power. For example, a sine wave with a peak voltage of 10V has an RMS voltage of approximately 7.07V.

5. How do you measure the voltage in an AC circuit?

The voltage in an AC circuit can be measured using a voltmeter, which is a device that measures voltage. It is important to ensure that the voltmeter is set to the correct range for the voltage being measured, and that it is connected in parallel to the circuit element or points where the voltage is being measured.

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