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Are Flat disc capacitors made up of two flat plates separated by insulating material.?
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How are the pushed together and pulled apart?
Both continental and oceanic plates float on the top surface of the mantle, which is divided into convection cells. The movement of these convection cells drag the plates along: where convection causes the mantle material to fall the plates are pushed together and where convection causes the mantle material to rise the plates are pulled apart.
What can the plates in a capacitor be made from?
Any conducting material. Thin metal foil is common.
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.
How capacitor charges i want to know about the physical phenomenon ofcharging capacitors?
Forsimplicity, take a parallel plate capacitor. It consists of two parallel plates displaced by certain but very small distance. This distance is covered by a dielectric which blocks the flows of electrons when applied to a potential difference (voltage) ---- it is the property of dielectric material. When we suddenly applies potential difference across the two parallel plates at that instant, sudden current (almost equal to s/c current) flows from one plate to another plate through the dielectric due to its unability to oppose this sudden flow as its region of depth (length of spreading) is very low. when the time is going on, it tries to oppose the flow of electrons by which these electrons deposited on the parallel plates as they have large surface area and provides sufficient place to deposit the opposed electrons by the dielectric material placed between the two plates. When they deposit, they creats some potential across the plates. As the time is going more and more the strength of opposition made by the dielectric increases there by depositing more and more electrons on one of the plate (depending on the connections). This increase in depositon of more and more electrons in creases the creation of potential difference between the plates. - - - in this way the capacitor is charging to the supply voltage. THIS IS MY IDEA ONLY, IF YOU FOUND IT IS FALSE, PLEASE DRAFT CURRECT ANSWER. Regards, Masti DOG.
What did alessandro volta invent?
He invented the electric battery! He was also reffered to the the voltmeter. He proved that you didn't need animal skins to conduct electricity.His battery had metal plates that were separated by cardboard that was soaked in acids or saltwater.he invented the electric battery
What is the part of capacitor?
Capacitors consist of a insulating material, called a 'dielectric', sandwiched between two conductors, called 'plates'. Capacitors are devices that store energy(not charge!); this energy is stored in the electric field set up within the dielectric between the two plates when they are connected to an external potential difference.
How are capacitors made?
A capacitor, in its simplest form, is two conductive plates separated by a dielectric.
What are the two parts for a variable capacitors?
The main parts of a capacitor are:two conducting plates separated byan insulating material (called a dielectric) surrounded byfurther insulation - plastic or paper - as a protective jacket andexternal wires (connected internally to the plates) to allow the capacitor to be connected into a circuitand, on large units:a protective case made of metal or plastic andexternal terminals connected internally to the plates,to allow the capacitor to be connected into a circuit.
Why are capacitors cylindrical?
Capacitors are cylindrical to limit the capacitors physical size. Capacitors are basically two conducting sheets with an insulating sheet between them, this means that the way to make them more compact is to roll them up and hence this gives the cylindrical shape. Another Answer Capacitors are not necessarily cylindrical. Those that are, are manufactured by winding the two plates and the dielectric, swiss-roll style.
Difference between ceramic and electrolytic capacitors?
In ceramic capacitors the dielectric is a thin layer of ceramic and both plates are metal foil. These capacitors are unpolarized. These capacitors have negligible internal inductance or resistance.In electrolytic capacitors the dielectric is an ultra thin layer of corrosion on the surface of a metal foil plate and the other plate is an electrolyte paste. These capacitors are polarized and if connected backwards are likely to explode. These capacitors have significant internal inductance, making them bad filters of noise in the MHz range and above which requires ceramic capacitors.
Why capacitance increses in parallel?
To avoid that the plates touch each other. The better the dielectric, the closer the plates can be, thus making the electrostatic field on the opposite plates more intense, which allows for more electrons displaced via the charging circuit to the positive plate and more incomplete atoms (positive charges) left on the negative plate. Remember: Being the dielectric an isolator, there is NEVER current through the capacitor.
How do capacitors classified?
capacitors are classified on the basis of dielectric material used inside it. For example the electrolytic capacitor consist electrolyte as dielectric mica capacitor consist mica as dielectric between plates and ceramic capacitor consist ceramic as dielectric.
Explain capacitance of bundled conductor line?
Capacitors are formed by placing two conductors near each other. Usually, they are plates separated by an insulating dielectric. The capacitance is a function of the area and closeness of the plates. Bundled conductors have capacitance for the same reason - they are conductors close to each other. Since capacitors work by transferring charge (remember that the equation of a capacitor is dv/dt = i/c) then a signal on one conductor can induce a "copy" of the signal on the other line - usually a faint copy, but a copy nontheless. This induced voltage effect is also known as interference, and must be considered in the final system design.
What is the cause of Hum in AC Capacitors?
Hum is caused in (low frequency) AC capacitors by electrostatic forces between the capacitor's plates, causing them to vibrate.
Why do you use a dc capacitor in table fans while an ac capacitor in a ceiling fan?
there is no separate capacitors for AC and DC. All capacitors are same. Electrolytic capacitors are manufactured by creating a die-electric by chemical etching or electroplating on one plate. Such capacitors when connected in AC circuit dislodges the die-electric material and thus results in short circuit between the two parallel plates of the capacitor. For AC circuits only non-electrolytic capacitors should be used. The common type is oil impregnated paper capacitor.
Is a Capacitor a layer of wire with layers of metal foil separated by wax paper?
A capacitor is 2 plates of conductor (usually metal) with something insulating them from one and the other. A positive charge is placed on one plate (fewer electrons making in effectively positive) and the other plate having a negative charge( having extra electrons and an effective negative charge). Air could and has been used. Older radio and TV tuners were made this way. Some capacitors have an alkaline like substance in between the plates to increase the value of the capacitor.
Define mica capacitor?
A mica capacitor is simply one that uses the mineral mica as the dielectric or insulator between plates.
