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Is it true that a capacitor is initially uncharged the potential difference across it is zero?
Wiki User
∙ 11y ago
yes
Wiki User
∙ 11y ago
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When DC power is first applied to an uncharged capacitor it appears as a?
When DC power is first applied to an uncharged capacitor it appears as a short circuit.
What happens if you connect an uncharged capacitor to your amp?
if you use a uncharged capacitor most likely your car battery will drain much faster using a uncarged capaciter will mess up your amp good power source is needed for your amp to give its maximum potential for deeper bass and no dimming
A 6.50 mu F capacitor that is initially uncharged is connected in series with a 4500 Omega resistor and a 500 rm V emf source with negligible internal resistance Just after the circuit is completed?
Any capacitor that is initially uncharged, when presented with a step change in voltage, will have an instantaneous resistance of zero ohms. As a result, the instantaneous current with a circuit involving 4500 ohms and 500 volts will be about 0.111 amperes. It does not matter what the capacitance is.The stated voltage in the question is unclear, so 500 volts was assumed for the answer.
What makes the capacitor to store charges?
A capacitor consists of two plates (foils ...) separated by an insulating medium. The insulating medium may be air, oil, a plastic film, and so on, and is known as the dielectric. The charge on the capacitor is actually stored by slightly distorting the molecules in the dielectric. The quality of a dielectric is measured by a factor known as K, and a higher K means that the molecule can store a larger distortion. When we discharge the capacitor, the molecules are allowed to relax to their uncharged state.
Explain charging and discharging capacitor?
no difference is there. if you connect an uncharged one to a battery/voltage source,current flow will be there for a short time which will tend to charge or in more precise manner will develop charge on its plates.if you connect this charged one to a resister or some load,then capacitor will itself act as a voltage source sending current in the circuit at the expense of the charge present on it.this is discharging current.both are same bunt one tends to put up charge while other does the opposite.
When DC power is first applied to an uncharged capacitor it appears as a?
When DC power is first applied to an uncharged capacitor it appears as a short circuit.
What happens if you connect an uncharged capacitor to your amp?
if you use a uncharged capacitor most likely your car battery will drain much faster using a uncarged capaciter will mess up your amp good power source is needed for your amp to give its maximum potential for deeper bass and no dimming
What happens when a charged capacitor is connected across an uncharged one?
When a charged capacitor is connected to an uncharged capacitor charge flows from the charged to the uncharged capacitor until there is no net force on the charge carriers. This means that both capacitors are at the same potential, because if they were not, there would be an electric fieldand hence a force on the charge carriers of magnitudeand the charge carriers would move to equalize the potentials and reduce the electric field and hence the force, eventually to zero. Of course, as charge flows from one capacitor to the other, the total charge is conserved. In the diagram above, when switch is closed chraged flows from the top capacitor to the bottom. When charge has stopped flowing, Also, because the potentials are equal(1) Suppose then that the capacitor at top left is initially charged to potential ofand that it has capacitanceand is then connected to a capacitance Initiallystores a charge Then (3) From (1) (4) Sub (4) into (1) to get Now usefor either capacitor to findUsing it for (2) gives from A Level Physics Notes
A 6.50 mu F capacitor that is initially uncharged is connected in series with a 4500 Omega resistor and a 500 rm V emf source with negligible internal resistance Just after the circuit is completed?
Any capacitor that is initially uncharged, when presented with a step change in voltage, will have an instantaneous resistance of zero ohms. As a result, the instantaneous current with a circuit involving 4500 ohms and 500 volts will be about 0.111 amperes. It does not matter what the capacitance is.The stated voltage in the question is unclear, so 500 volts was assumed for the answer.
What happens when a charged electroscope is connected to an uncharged electroscope by a metal wire?
Charge would flow from the charged electroscope to the initially uncharged one, until the charges are equal on both. At that point, the potential on both ends of the wire would be equal, there would be no voltage across the wire, and no more current would flow. Both electroscopes would then be charged, with charge of the same sign, and with half as much charge as the initially-charged one had.
What makes the capacitor to store charges?
A capacitor consists of two plates (foils ...) separated by an insulating medium. The insulating medium may be air, oil, a plastic film, and so on, and is known as the dielectric. The charge on the capacitor is actually stored by slightly distorting the molecules in the dielectric. The quality of a dielectric is measured by a factor known as K, and a higher K means that the molecule can store a larger distortion. When we discharge the capacitor, the molecules are allowed to relax to their uncharged state.
How is electricity produced in a wet cell?
The gravitational and electrical pootential are quite similar . Like a difference in the gravitaional potential causes the movement of the mass to a lower potential point simmilarly in an electric field a charged particle also has an electric potential or electric potential field simmilar to a mass has in a gravitational field . Suppose a negatively cahrged object and a positive test charge is placed near it then as we all know that the positive test charge will be attracted towards the negatively charged object . Now if we want to move tha +ve test charge away from the negatively charged object them we will have to spend some energy and that energy will get converted into the electric potential energy . This means that we did do some work in in moving that +ve test charge away from the -ve sphere and spent energy in doing so . Thus its electric potential enrgy increased . Thus there is some electric potential difference between the the two points - the initial pont and the second point . This potential difference will cause the test charge to move to the initial point and the electric potential energy will get converted into kinetic energy or useful work . Thus now we know that a potential difference is required to move the charge . If a charged body is connected to an uncharged body by a conductor then charge will flow from the charged to the uncharged body . This means the charge will flow from the high potential(charged body) to the low potential (uncharged body). A dry cell provides current and to do so it maintains a potenial difference . By the chemmical reactions taking place in the dry cell the charges are maintained on the respective electrodes and hence a potential differnce is maintained which causes the elctrons to flow when the cell is connected to a load . I normal AA cell has a standard potential difference of 1.5 volts which means 1.5 joules of energy is carried by every 1 coulombs of the charge and this energy is used in the load to produce power . Gradually the chemicals get used up and the cell gets discharged .
Water molecules are uncharged and?
Water molecules are uncharged and polar.
Why does a charged body attract an uncharged body?
The charged body will induce a separation of charges in the uncharged body.The charged body will induce a separation of charges in the uncharged body.The charged body will induce a separation of charges in the uncharged body.The charged body will induce a separation of charges in the uncharged body.
Alpha beta gamma which is uncharged?
gama radiation is uncharged. Alpha is positive and beta is negative.
If a electrically uncharged body is contacted by an electrically charged body the uncharged body will?
If an electrically uncharged body is contacted by an electrically charge body then the uncharged body will gain a charge. This is because electricity flows from a higher concentration to a lower concentration and will balance out.
What is the difference between positive negative and neutral mutations?
the negative can make electricity but on the other hand if you have an uncharged battery you will get a equal, so if you have a positive you will get the opposite.
