Why do we want to know how much a charge can be stored /V?

In summary, the conversation discusses the relationship between voltage and charge storage in capacitors. The motivation for asking these questions is to gain a better understanding of this relationship and its significance. The example of blowing up a balloon half way and needing more pressure to add more air helps to clarify this concept.
  • #1
naiasetvolo
22
0
Why do we want to know how much a charge can be stored per volt?
What has the voltage to do with the storage of charge in a capacitor?
 
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  • #2
naiasetvolo said:
Why do we want to know how much a charge can be stored per volt?
What has the voltage to do with the storage of charge in a capacitor?
What is your motivation for asking these questions?

Chet
 
  • #3
Chestermiller said:
What is your motivation for asking these questions?

Chet
I am reading about electric field, capacitors and capacitans. And I got stuck in the part where it explained about the capacitans, this was the explanation about the capacitans: "How much charge the capacitor can store per volt".
As I have understood voltage can be seen as pressure. Why is it so that the capactians is what stores the charges per voltage? The way I see it is that the amount of charge is what makes voltage. Without charge there would be no voltage. If these two are in relation then why do we want to know how much charge can be stored in voltage?
The way they are explaining it makes it sound as these two are two separate entities. I am not sure if I have made myself clear.
 
  • #4
It doesn't matter which comes first, the voltage or the charge. The more charge you store, the higher the voltage.

Blow up a balloon half way. Now, to blow more air in the balloon, you need more pressure.
 
  • #5
anorlunda said:
It doesn't matter which comes first, the voltage or the charge. The more charge you store, the higher the voltage.

Blow up a balloon half way. Now, to blow more air in the balloon, you need more pressure.
Thank you, I understand now. Your example made it clear.
 

1. Why is it important to know how much charge can be stored in a material?

Knowing how much charge can be stored in a material is important for many practical applications, such as designing batteries, capacitors, and other electronic devices. It also helps us understand the behavior of materials in different environments and can lead to the development of new materials with improved charge storage capabilities.

2. How does the amount of charge stored affect the performance of electronic devices?

The amount of charge that can be stored in a material directly impacts the performance of electronic devices. For example, a battery with a higher charge storage capacity can power a device for a longer period of time before needing to be recharged. Similarly, a capacitor with a larger charge storage capacity can hold more energy and deliver it quickly when needed.

3. What factors affect the amount of charge that can be stored in a material?

The amount of charge that can be stored in a material is influenced by various factors, such as the type of material, its physical and chemical properties, and the environment in which it is used. Other factors that can affect charge storage include the surface area of the material, temperature, and the presence of impurities or defects.

4. How is the amount of charge stored measured?

The amount of charge stored in a material can be measured using different techniques, depending on the type of material and the desired accuracy. One common method is to use an instrument called a capacitance meter, which measures the electrical capacitance of a material. Other methods include coulomb counting, electrochemical analysis, and various spectroscopic techniques.

5. Can the amount of charge that can be stored in a material be increased?

Yes, the amount of charge that can be stored in a material can be increased through various methods, such as improving the material's structure or composition, optimizing its surface area, and enhancing its electrochemical properties. Researchers are continuously working to develop new materials and techniques that can increase the charge storage capacity of materials, leading to more efficient and powerful electronic devices.

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