Different Capacitors in a Circuit

In summary, the voltage of both A and A2 will be the same, as there are two capacitors in a series in each circuit. However, the charge, charge accumulation, and energy stored will all be equal as well due to the equal charge on each side of the capacitor and the total charge in the middle being zero. The net change in voltage in any closed loop in a circuit must be zero.
  • #1
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Homework Statement


Which of the following capacitors (A vs. A2, which are identical) will have a larger charge, charge accumulation, voltage, energy stored? (Assume that the only difference between the two circuits is the size of the other capacitor in the circuit, as shown.)
physics.jpg


Homework Equations


Q=VC, U=1/2CV^2
Net change in voltage in any closed loop in a circut must be 0.

The Attempt at a Solution


Originally, I thought that the voltage of both A and A2 would be the same, because there are two capacitors in a series in each circuit. But I think this is wrong because it makes the charge, charge accumulation, and energy stored all 'same' as well.
 
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  • #2
When a capacitor is charged, it gets +Q on one plate and -Q on the other. Equal charge on each side. Also, in your series circuit, the total charge in the middle (right plate of one capacitor and left plate of the other) must be zero (because there is no conductor going from there to the battery to pass a charge). That should be enough info for you!
 

1. What is a capacitor and what does it do in a circuit?

A capacitor is an electronic component that stores electrical charge. It is used in a circuit to temporarily hold and release energy, acting as a short-term battery.

2. What are the different types of capacitors that can be used in a circuit?

There are several types of capacitors, including ceramic, electrolytic, film, and variable. Each type has its own unique characteristics and is suited for different applications.

3. How do capacitors affect the overall performance of a circuit?

Capacitors can affect the performance of a circuit in several ways. They can filter out noise, stabilize voltage, and store energy for quick release. They can also affect the frequency response and phase shift of a circuit.

4. Can different capacitors be used interchangeably in a circuit?

While capacitors may have similar functions, they are not always interchangeable. Different types of capacitors have different capacitance values, voltage ratings, and frequency responses, which can affect their performance in a circuit.

5. How do I choose the right capacitor for my circuit?

To choose the right capacitor for a circuit, you need to consider the required capacitance, voltage rating, and frequency response. You should also consider the size, cost, and availability of the capacitor. It is important to carefully select a capacitor that meets the specific needs of your circuit.

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