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Capacitors store energy in the electric field between their plates. They do not store charge, the net value of which is the same after, as before, charging (they do, however, separate charge).
Wiki User
∙ 9y ago
Wiki User
∙ 9y agoA capacitor stores charge. Charge is measured in coulombs.
Voltage is energy per charge, or joules per coulomb. The amount of energy available in a capacitor is related to its capacitance, measured in farads. The differential equation that describes the function of a capacitor is ...
dv/dt = i/c
... that is, volts per second is amperes divided by capacitance.
Electricity is many things; charge, voltage, current, etc. It all depends on usage.
ANOTHER ANSWER
Capacitors do not store charge; they store energy.
The net charge on the plates of a capacitor is exactly the same after, as before, 'charging'. The confusion results from our traditional use of the terms, 'charging' and 'discharging', when we should be using the terms, 'energising' and 'de-energising'!
On the other hand, you could argue that capacitors store 'separated charge', which is true because, while there is no net change in the overall charge on the plates, a 'charged' capacitor has an imbalance of charges -i.e. electrons from one plate are transferred over to the other plate. But to say they 'store charge' implies that they take charge from the supply, and store it on its plates, which is completely untrue.
So, capacitors store energy, expressed in joules, NOT charge, expressed in coulombs!
Wiki User
∙ 12y agoYes .. that is the function of the capacitor .. to store an electrical charge .. but unlike a battery it releases it all at once .. be careful handling a capacitor that might not have been discharged , it could shock you.
AnswerNo. A capacitor simply allows the transfer of negative charge from one plate across to its other plate, resulting in the establishment of an electric field between the two plates. There is no net change whatsoever in the amount of charge on the capacitor. So a capacitor does not store charge! What is stored is energy.
Wiki User
∙ 11y agoMore of what ?
-- A capacitor can't be charged to a higher voltage than that of the device that charges it.
-- A capacitor can't store more energy than is supplied by the device that charges it.
-- Timewise ... a capacitor can deliver its charge and energy faster, slower, or at the
same rate, taking less time, more time, or the same time, as it was charged.
(Think the strobe on a camera.)
-- A capacitor can deliver more, less, or the same current as was used to charge it.
Wiki User
∙ 14y agoYes, for a while...it can bleed off
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What is the function of a capacitor in a washing machine?
The function of a capacitor in a washing machine is to store a charge. This charge is what starts the washer.
What is the difference between capacitor and conductor?
A conductor is a material that possesses free charge carriers capable of transferring an electrical charge. A capacitor is a discrete device in which two conducting plates sandwich an electrolytic wafer. The purpose of a capacitor is to store a charge for a finite amount of time.
What is the principle of capacitor?
The simplest capacitor is just two parallel metal plates, not touching. When a battery is connected across the plates, the plates become charged, with electric charges sitting facing each other, positive ones on the positive plate and negative on the negative. When the battery is removed, the charges stay where they are so the capacitor is a way to store electric charge and energy, a bit like a rechargeable battery. Supposing the battery was 1 v and the charge is +1 coulomb on one plate and -1 coulomb on the other. That means the capacitor has a capacitance of 1 Farad. The amount of charge a capacitor can store is given by the formula Q = CxV in other words the charge is the capacitance times the voltage. So a large capacitance can store more charge for the same voltage. With the 2-plate capacitor the capacitance increases if the plates are bigger and also if they are closer together. Larger capacitance can be produced by using two sets of interleaved plates. Each set has all its plates connected together, and there is dielectric insulation between all the plates.
What is the opposite of static electricity?
"Fenetic"- No, that doesn't exist. I'm not sure what is the opposite of static electricity yet. Static Electricity is a stationary electric charge or a stationary electric charge that builds up on an insulated object such as a capacitor or a thundercloud
Define capacitance with respect to physical structure and electrical function?
capacitance, in electricity, capability of a body, system, circuit, or device for storing electric charge. Capacitance is expressed as the ratio of stored charge in coulombs to the impressed potential difference in volts. The resulting unit of capacitance is the farad [for Michael Faraday]. In an electric circuit the device designed to store charge is called a capacitor. An ideal capacitor, i.e., one having no resistance or inductance, may be spoken of as a capacitance. When an alternating current flows through a capacitor, the capacitor produces a reactance that resists the current (see impedance). While every element of a circuit has some capacitance, it is a goal of good design to reduce such unwanted or stray capacitance to a minimum.
What is a device used to store charge?
A capacitor stores an electric charge. An inductor stores a magnetic charge.
Which electronic component can store a charge?
A parallel plate capacitor is an electrical component which can store charge. The charge is stored according to the equation: qo = q(1-e-t/RC) [in a charginr circuit.]
What is a capacitance?
capacitanceis the ability of a body to store charge in anelectric field. Capacitance is also a measure of the amount of electric potential energy stored (or separated) for a given electric potential.AnswerA capacitor is a device that will store electrical energy. This energy is stored in its electric field. This is achieved by separating the charge on its plates -contrary to popular belief, it does not store that charge, as the net charge remains the same after charging as it was before charging.
How a capacitor store charge?
by using capacitor plates. The length,area ,thickness and type of the plate determines the amount of charge a capacitor can store.
How does a capacitor bank work?
They store charge between their plates in an electric field
What does an electolytic capacitor do?
It stores an electric charge.
What does a capacitor?
Capacitor is an arrangement for storing large amounts of electric charge and Hence electric energy in a small space.
What is the function of a capacitor in a washing machine?
The function of a capacitor in a washing machine is to store a charge. This charge is what starts the washer.
If the capacitor store the charge from the magnetic field then the capacitor is called?
it wouldn't store a charge from the magnetic field, only the current induced on the circuit would be stored
Which type of current capacitor can block and which type of current capacitor can store?
In an electronic circuit a capacitor can be used to block direct current. In general a capacitor stores electric charge. The charge in a capacitor is the voltage times the capacitance and that is also equal to the charging current times the time (all quantities in SI units - seconds, volts, amps, coulombs, farads)
What is an importance of capacitance?
capacitor is a device to store charge .it is based on the concept that when the potential of the capacitor is decreased it can gain some more charge so Q = CV where V is potential and Q is the charge stored then C is the capacitance. capacitance is the ability of the capacitor to store charge. expression for capacitance is C=ɛA/d where ɛis permittivity and A is area of capacitor plates ,d is plate separation.
What is held by power supply capacitor?
Capacitor store electrostatic energy in form of electric field.
