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When a capacitor is neutralized where does excess charge go back to?
Wiki User
∙ 14y ago
A capacitor is "charged" when the charge on the two plates is not the same. When you neutralize or "discharge" the capacitor you are transferring charge back to the low plate, so that the charge on both plates is the same.
Wiki User
∙ 14y ago
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What is the use of a capacitor in circuit?
the capacitor is store the charge and used as back up
What is the main function of a capacitor?
They pass AC and block DC. So they are used in filters of various types as well as signal coupling. The capacitor is use to store the electric energy in the automobile ignition system. The capacitor is attached to the secondary winding of ignition coil. When contact breaker breaks the contact to the primary winding and sudden collapse of magnetic flux induces the high voltage to the secondary winding. This excess voltage is stored in capacitor. Capacitor releases the electric energy when it need. It protects cam and contact breaker points from corrosion or rusting.
Does the charge that flows into the capacitor during the charging process go all the way through the capacitor and back to the battery's or does it get stored somewhere in the capacitor?
A capacitor stores electrical charge. When the device is shut off, the charge will - over time - slowly bleed off. But immediately after shutdown, the charge is still present in the capacitor. In large capacitors, such as those found in air conditioning units, older style televisions, and microwave ovens, the stored charge can be strong enough to be potentially lethal. Service technicians have safe procedures for bleeding off the capacitor charge, but those not knowledgeable about electrical systems should not touch a chassis of above-mentioned items, even if shut off and unplugged. Stickers that say "Danger - High Voltage" mean exactly what they say.Another AnswerA capacitor does NOT store charge; it stores energy.The net charge on the plates of a capacitor is no different whether it is 'fully charged' or 'fully discharged'. It does not take charge from the supply and store it on its plates! It simply allows electrons from one plate to be transferred to the other, so there is no change in the overall amount of charge.What it does do is to store energy, expressed in joules.
What movie was a Flux Capacitor used in?
thats what makes time travel possible. Flux is the rate of flow of energy, and capacitor is a device for accumulating and holding a charge of electricity
How the charge oscillate in LC circuit?
If a charged capacitor is connected across an inductor, charge will start to flow through the inductor, building up a magnetic field around it, and reducing the voltage on the capacitor. Eventually all the charge on the capacitor will be gone and the voltage across it will reach zero. However, the current will continue, because inductors resist changes in current, and energy to keep it flowing is extracted from the magnetic field, which will begin to decline. The current will begin to charge the capacitor with a voltage of opposite polarity to its original charge. When the magnetic field is completely dissipated the current will stop and the charge will again be stored in the capacitor, with the opposite polarity as before. Then the cycle will begin again, with the current flowing in the opposite direction through the inductor.The charge flows back and forth between the plates of the capacitor, through the inductor. The energy oscillates back and forth between the capacitor and the inductor until (if not replenished by power from an external circuit) internal resistance makes the oscillations die out. Its action, known mathematically as a harmonic oscillator, is similar to a pendulum swinging back and forth, or water sloshing back and forth in a tank. For this reason the circuit is also called a tank circuit. The oscillation frequency is determined by the capacitance and inductance values used. In typical tuned circuits in electronic equipment the oscillations are very fast, thousands to millions of times per second.
Why does capacitor supply reactive power?
A capacitor needs current to flow into and out of it before a voltage is developed across it, so in an ac circuit the current in a capacitor is 90 degrees or a quarter-cycle in front of the voltage. In a 50 Hz system the cycle period is 20 milliseconds so the current peak is 5 milliseconds before the voltage peak every time. The energy in the capacitor is the charge times the voltage, and energy flows into the capacitor and back into the supply twice per cycle. No net energy is dissipated in the capacitor. All the energy is reactive, in other words it flows in and out. The power-factor of the capacitor seen as a load is zero.
How do kinetic flashlights work?
A bar magnet moves back and forth through a coil. Moving a conductor through a magnetic field (or vice versa) generates a flow of electrons. The electrons are used to charge a capacitor, and the saved charge can be released gradually to power the flashlight bulb.
What type of life insurance companie pay dividends?
Rip-off companies. If they pay dividends, it means they are returning excess premiums you paid. So they charge you bunch of money at first and invest it for themselves. Then return the excess premiums back to you at the end of the year.
How can a capacitor filter the AC and DC?
A capacitor consists of two plates separated from one another by an insulator. These plates are normally thin foil and can be sandwiched around a very thin insulator and wrapped into a small package. Since there is an insulator between the plates, DC connected to the two plates cannot flow as long as you do not exceed the breakdown voltage of the insulator. AC current is a different story. Because the insulator is very thin and the effective plate area is relatively large, a negative charge building up on one plate causes electrons to be repelled from the opposite plate, and as the charge on the first plate reverses and becomes positive, the electrons in the opposite plate are attracted back again. This results in a matching alternating current flow on the opposite side of the capacitor.
Can a capacitor create more Amps than is put into it at high voltages?
You better believe it, otherwise you're in for a surprise. A capacitor is a current storage device, and even when fed by a small charge from a (say) kV supply, it will eventually acquire the full capacitance charge at the charging voltage.The charge is stored as a distortion of the insulating material, and when it discharges, if into a low-resistance circuit, the current will be high.And with high voltage capacitors, there may be a small hysteresis of the dielectric, and this will relax back to a zero stress position only slowly.So you should discharge an HV capacitor several times, waiting a few seconds between discharges.This is a mistake many technicians make, but generally only the once!
How much electricity was required to energize the flux capacitor IN Back to the Future?
1.21 Gigawatts
Is a AC capacitor can help to reduce wattage consumed?
no, the capacitor is a passive element it doesn't change the real power the energy it consum during charging it gives back when descharging
