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The job of a capacitor is to store charge onto its plates. The amount of electrical charge that a capacitor can store on its plates is known as its Capacitance value and depends upon three main factors.
- The surface area, A of the two conductive plates which make up the capacitor, the larger the area the greater the capacitance.
- The distance, d between the two plates, the smaller the distance the greater the capacitance.
- The type of material which separates the two plates called the "dielectric", the higher the permittivity of the dielectric the greater the capacitance.
What else can I help you with?
What is the difference between capacitor and capacitance?
A capacitor is a device that stores an electrical charge, or if you prefer- resists any change in voltage applied to it. Capacitance is a measure of the size or ability of a capacitor to do that. This is the Farad
How long can a capacitor hold a charge for?
Depends upon the capacitance. The time of holding charge can analyse by transient analysis.
Function of dielectric in a capacitor?
The main role of dielectrics in capacitors is to increase the value of capacitance of the capacitor.
Why does capacitance increase when the distance between the plates of a capacitor is increased?
you have it reversed. capacitance increases with decrease in distance of plates.
What is the function of fixed capacitor?
A fixed capacitor has a fixed capacitance (within certain limits influenced by aging). So it can fulfill any function that a (variable) capacitor fulfills, beside changing its capacitance easily (e. g. by turning a wheel).
What two facctors determine the capacitive reactance of a capacitor?
The two factors that determine the capacitive reactance of a capacitor are the frequency of the AC voltage applied to the capacitor and the capacitance value of the capacitor. At higher frequencies and with larger capacitance values, the capacitive reactance decreases.
What two factors determine the capacitive reactance of a capacitor?
The two factors that determine the capacitive reactance of a capacitor are the frequency of the alternating current passing through the capacitor and the capacitance value of the capacitor. Capacitive reactance (Xc) is inversely proportional to the frequency (f) and directly proportional to the capacitance (C), as calculated using the formula Xc = 1 / (2πfC).
What will the affect of capacitance of a capacitor when a conductor is placed between a capacitor?
capacitance will tend to zero
How does a capacitor discharge and what factors affect the rate of discharge?
A capacitor discharges by releasing stored electrical energy. The rate of discharge is affected by factors such as the capacitance of the capacitor, the resistance of the circuit, and the voltage across the capacitor. A higher capacitance or lower resistance will result in a slower discharge rate, while a higher voltage will lead to a faster discharge.
What factors should I consider when determining how big of a capacitor I need for my project?
When determining the size of a capacitor for your project, consider factors such as the voltage requirements, capacitance value, size constraints, and the intended use of the capacitor. It is important to choose a capacitor that can handle the voltage and provide the necessary capacitance for your project while fitting within the physical space available.
What is the relationship between potential difference and capacitance in a capacitor?
The relationship between potential difference and capacitance in a capacitor is that the potential difference across a capacitor is directly proportional to its capacitance. This means that as the capacitance of a capacitor increases, the potential difference across it also increases, and vice versa.
How does capacitance change with voltage?
Capacitance is a measure of how much charge a capacitor can store for a given voltage. As the voltage across a capacitor increases, the capacitance typically remains constant. However, in some cases, the capacitance may change slightly due to factors like dielectric breakdown or non-linear effects.
What means by the name capacitance of a capacitor?
The capacitor is an electronic device. Capacitance is the energy stored within this device.
What is the difference between capacitor and capacitance?
A capacitor is a device that stores an electrical charge, or if you prefer- resists any change in voltage applied to it. Capacitance is a measure of the size or ability of a capacitor to do that. This is the Farad
How are the terms capacitor and capacitance related?
Capacitor is the name of the device and capacitance is a measure of farads in the capacitor. Capacitance is the capacity for storing charge in the capacitor as measured in farads, micro farads or millifarads.
What is a capacitor analyzer designed to read?
Capacitor voltage
What factors affect the reactance of a capacitor?
Reactance (in ohms) = 1/(2 pi * capacitance * frequency). Capacitance is in farads. Frequency is in Hertz (cycles/second). So increasing capacitance or increasing frequency will decrease reactance.
