Conductors in capacitor

In summary, conductors in a capacitor are the two plates made of a highly conductive material that store electric charge and affect the capacitor's capacitance. The type of conductor used can also impact the capacitor's performance, and there are limitations to using conductors, such as breakdown voltage and maximum charge storage. Conductors differ from insulators in their role of storing and conducting electricity, while insulators prevent the flow of electricity and increase capacitance by reducing the electric field between the plates.
  • #1
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hey

i have 2 cylinders one with r1 the second with r2. r2>r1, an cylinder capacitor.

in the space between them i put 2 dielectric materials, the first in a half of the cylinder, vertical,and the second on the other side vertical.

like: first- 0-180 deg
second- 180-360 deg

now i want to calculate the capacity , can i calculate each half by itself and then add?

and threat each half as it's own capacitor?, and then as summing in parallel ...

thanks
 
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  • #2
That is exactly what you should do. The two halves effectively act as capacitors in parallel.
 
  • #3


Dear colleague,

Thank you for your question. To answer it, we need to first understand the concept of capacitance and how it is affected by the presence of dielectric materials. Capacitance is a measure of a capacitor's ability to store electric charge. It is directly proportional to the surface area of the conductors and inversely proportional to the distance between them.

In your scenario, you have two cylinders with different radii and two dielectric materials placed between them. To calculate the capacitance of this setup, we can use the formula C = εA/d, where ε is the permittivity of the dielectric material, A is the surface area of the conductors, and d is the distance between them.

Since you have two different dielectric materials, we can calculate the capacitance of each half of the cylinder separately and then add them together. Each half can be treated as its own capacitor because the presence of the dielectric material changes the effective distance between the conductors, thus affecting the overall capacitance.

However, when adding the capacitances of the two halves, we need to consider whether they are connected in series or parallel. If they are connected in series, the total capacitance will be less than the individual capacitances of each half. If they are connected in parallel, the total capacitance will be the sum of the individual capacitances.

In summary, yes, you can calculate the capacitance of each half separately and then add them together. However, you need to consider the connection type (series or parallel) of the two halves when adding them. I hope this helps. Let me know if you have any further questions.

Best,
 

1. What are conductors in a capacitor?

Conductors in a capacitor refer to the two plates that are separated by an insulating material, known as the dielectric. These plates are made of a highly conductive material, such as metal, and are responsible for storing electric charge in a capacitor.

2. How do conductors affect the capacitance of a capacitor?

The conductors in a capacitor have a direct impact on its capacitance, which is the ability to store electric charge. The larger the surface area of the conductors, the higher the capacitance will be. This is because the larger surface area allows for more charge to be stored on the plates.

3. Can the type of conductor used in a capacitor affect its performance?

Yes, the type of conductor used in a capacitor can affect its performance. Different conductive materials have different levels of conductivity, which can impact the capacitor's ability to store and release charge. The type of conductor may also affect the durability and stability of the capacitor.

4. Do conductors have any limitations in a capacitor?

Yes, there are limitations to using conductors in a capacitor. One limitation is the breakdown voltage, which is the maximum voltage that can be applied to the capacitor before it starts to conduct electricity. Another limitation is the maximum charge that can be stored on the plates, which is determined by the surface area and distance between the plates.

5. How do conductors in a capacitor differ from insulators?

Conductors in a capacitor are responsible for storing and conducting electric charge, while insulators are used to separate the conductors and prevent the flow of electricity. Insulators have a much lower conductivity compared to conductors, and they are used to increase the capacitance of a capacitor by reducing the electric field between the plates.

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