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Why dc can be stored ac cannot stored?
Why direct current (DC) can be stored but alternating current(AC) can not be? Current means flow of charge per unit second. Any flow cannot be made stationary. Then it is not flow. Hence both direct current and alternating current cannot be stored. We can store only charges. In capacitors we store charges and not current. For storing we use direct supply or direct voltage When a capacitor is connected to a battery, which is a source of direct voltage, each plate of the condenser get charged. Charges remain in the plates. No current flows in between the plates. When the source is removed, there are some charges left in the plates. We say that charges are stored in the plates. If an alternating source of supply is connected in between the plates,every instant ,the charges in the plates are alternating and they are not stationary. When ac supply is removed, all the charges move out of the plates and hence no charge is left in them. Hence charges can be stored with dc supply and not with ac supply. However as long as the ac is connected to the capacitor, the capacitor gets stored and emptied with the frequency of the ac supply.
Why does each plate receive charge of exactly same magnitude?
the plates of capacitor are connected to the same battery so same potential difference will develop across the plates of capacitors, as a result charges of same magnitude will be stored, as the charges are being supplied by the same battery.
Charge buildup between the plates of a capacitor stops when?
Charge buildup between the plates of a capacitor stops when the current flow through the capacitor goes to zero.
A 5 uf capacitor has 5x10 -4 coulombs a charge stored in its plates find the voltage across the capacitor?
A5uf capacitor has 5*10-4 coulombs of charge stored on its plates
An air capacitor is a?
And air capacitor is usually a motion capacitor whereby plates mesh to form a different capacitance using air as dielectric
Why does a charged capacitor have a net charge of zero?
A charged capacitor consists of two conductive plates with opposite charges. These charges cancel each other out, resulting in a net charge of zero for the capacitor as a whole.
Does a charged capacitor have an identical level of charge on both plates?
No, in a charged capacitor, one plate has a positive charge and the other plate has a negative charge. The magnitude of the charges on the plates is equal and opposite, resulting in a net charge of zero for the entire capacitor.
How does current flow in a capacitor?
Current does not flow through a capacitor in the same way as through a resistor. Instead, when a voltage is applied to a capacitor, it charges up by storing energy in an electric field between its plates. This stored energy can then be released when the capacitor discharges.
How does a capacitor discharge when a resistor is connected if there is dielectric material separating the two plates and the flow of electrons Is there some kind of path created within the material?
When a resistor is connected to a capacitor with dielectric material between the plates, the capacitor discharges through the resistor. The dielectric material remains an insulator and does not directly create a path for electron flow. Instead, the charges on the plates induce an electric field in the dielectric, which stores energy until the capacitor discharges through the resistor, allowing the charges to flow back and neutralize.
Why dc can be stored ac cannot stored?
Why direct current (DC) can be stored but alternating current(AC) can not be? Current means flow of charge per unit second. Any flow cannot be made stationary. Then it is not flow. Hence both direct current and alternating current cannot be stored. We can store only charges. In capacitors we store charges and not current. For storing we use direct supply or direct voltage When a capacitor is connected to a battery, which is a source of direct voltage, each plate of the condenser get charged. Charges remain in the plates. No current flows in between the plates. When the source is removed, there are some charges left in the plates. We say that charges are stored in the plates. If an alternating source of supply is connected in between the plates,every instant ,the charges in the plates are alternating and they are not stationary. When ac supply is removed, all the charges move out of the plates and hence no charge is left in them. Hence charges can be stored with dc supply and not with ac supply. However as long as the ac is connected to the capacitor, the capacitor gets stored and emptied with the frequency of the ac supply.
Why does a capacitor stores a limited amount of energy?
A capacitor stores energy by accumulating opposite charges on its plates. However, it has a limited capacity based on its size and dielectric material. Once the capacitor reaches its maximum charge, it can no longer store additional energy.
Why does each plate receive charge of exactly same magnitude?
the plates of capacitor are connected to the same battery so same potential difference will develop across the plates of capacitors, as a result charges of same magnitude will be stored, as the charges are being supplied by the same battery.
Charge buildup between the plates of a capacitor stops when?
Charge buildup between the plates of a capacitor stops when the current flow through the capacitor goes to zero.
What is the net force of a capacitor?
The net force on a capacitor in a circuit is zero because the electrical forces acting on the capacitor plates are equal in magnitude and opposite in direction, leading to a balanced system. This is due to the fact that the charges on the plates create an electric field that exerts forces that cancel each other out.
Does charge on a parallel plate capacitor depend on distance between the plates?
No, the charge on a parallel plate capacitor does not depend on the distance between the plates. The charge stored in the capacitor is determined by the voltage applied across the plates and the capacitance of the capacitor. The distance between the plates affects the capacitance of the capacitor, but not the charge stored on it.
Why does capacitor block dc?
A physical capacitor is made of two conducting plates arranged face-to-face, with vacuum or an insulating material between them. So the capacitor is actually an 'open' circuit ... there's no continuous conducting path through it, and if you connect it to the terminals of a battery, no current flows through it. It performs its job completely by means of the electrostatic forces of attraction or repulsion between charges on the two plates, but there's never actually any flow of electrons across the space between the plates. (If there is, then the 'dielectric' is punctured, and you need a new capacitor.)
What does not create charges but separate them?
A device that separates charges without creating new ones is a capacitor. Capacitors store energy in an electric field by collecting and holding positive and negative charges on separate plates, helping to store and release electrical energy when needed.
