How Does Charge Gather on Both Plates of the Capacitor?

When current flows into a capacitor, the charges get "stuck" on the plates because they can't get past the empty space between the plates directly. Even if dielectric is present,there is gap between plates and dielectric (although very small). Electrons - negatively charged particles - are sucked into one of the plates, and it becomes overall negatively charged. The large mass of negative charges on one plate pushes away like charges on the other plate, making it positively charged

• Related Questions

Why does a capacitor create a 90 degree phase shift of voltage and current?

Q CV (a basic fundamental i.e. charge capacitance x voltage)Differentiate both sides keeping capacitance constant: -$dfracdQdt C dfracdvdt$$dfracdQdt$ is current therefore I C $dfracdvdt$Now, if the voltage is a sine wave, the current will be a cosine (due to the differentiation of v w.r.t. t) i.e. it will be shifted forward by 90 degrees.If you are after a deeper explanation then try the physics site.

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Which is easier to solder: TSSOP or QFN?

On the other hand, the long external leads between the package and the board on a TSSOP or TQFP offer a longer lever for misalignment, a bigger surface to incur solder bridges and the center thermal pad (if present, and if your boards pad matches the size of the one on the chip) also helps center it during reflow.IMHO, it is a toss-up because it is harder to mess up with a QFN, but harder to fix if you do

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Why does Harry Potter put everything on his plate except peppermints in this passage?

I think another reason is it is supposed to show that despite his deprived upbringing, Harry's still capable of exercising restraint. Peppermint is a dessert, and it wrecks your palate if you try to eat anything after, so it is prudent of him to not take any.I think the scene is also indicative of how wizards do things in kind of a weird way compared to muggles. Muggles wouldn't put anything peppermint out with savory dinner things, but wizards do

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Potential lowering effect on a positively-charged plate

Your teacher is correct.The induced positive charges in parts of the plate near the block leave behind negative charges in parts of the plate far away from the block. The positive charges increase the potential of the plate and the left-behind negative charges decrease the potential of the plate. These two effects negate each other.From the plate's perspective, the polarized block can be treated as a small negative charge. This slightly decreases the electric potential inside of the plate

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Illustrator/InDD - Grayscale layers combine to CMYK

What finally worked...although how likely is it that someone has this specific problem?The preflight CMY errors were triggered by the intersection of an embeded image and some lines that went behind it. So I used the pen tool to trim the lines down. Now they only look like they are going behind the wave. Heaven forbid that wave ever needs to shift a little. I couldn't figure out a way to use a mask in Illustrator like in Photoshop

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Energy changes due increasing plate separation of unconnected charged capacitor

You need to do work when you want to seperate two plate. Assuming the area of plate is S and distance between the plates is d(also assume $Sgg d^2$). Then $Cfrac Sepsilon_0 d$ in vacuum.

The area charge density is $Q over S$ and it makes electric field.

$$Efrac Q2epsilon_0 S$$

So there is attractive force between the plates and you need to do work.

Difference between two calculation equals to the amount of work.

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Can I share Items between characteers?

Nope; this game is supposed to be hard (-ish), so no giving your other characters a boost. Dungeons of Dredmor follows "Roguelike" themes, not "MMORPG" themes. Thus, you have (the option of) permadeath, and no sharing items between characters. If you take a crafting skill, you'll be able to get some items for your class; anything else you can't use is either merchant fodder, something you might be able to break down for parts, or fuel for the Horadric Lutefisk Cube

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Is it safe to turn on a 40-year old TRS-80?

After you open it, Check for any worn out wires or cables(as mentioned by @tofro) and copper tracks on the mainboard. You don't want them to touch and short the circuit when you turn the power on. That may damage your precious vintage machine.

When you check the components, check for disconnected solder joints. Sometimes your machine is working but this causes it not to turn on.If the case is plastic, it may break easily after aforementioned temperature changes.

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How can I get this party started?

I think you need to build a mosh pit. Have the common area be directly below your NPCs' houses. Once they have moved in to their house, you should be able to get them to drop down into the pit by digging the floor out from under them. They won't be able to get back to their houses, but why would they want to leave the party anyways? As long as you keep them safe, they shouldn't respawn outside the pit.

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in the plate or on the plate

If a plate is has higher sides to it then it is a shallow bowl not a plate. As a Native English Speaker O have always said on the plate and in the bowl.

Agreed that if a person said they put their fork in his plate it would assume that it was into his food ..

If you said the fork was on the plate you would assume some sort of art work whereby the fork was embedded in the plate

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Framing around depressed area of floor: a good plan?

If the point of the bullnose is to cover untidy saw marks then all that should be needed is outside corner molding (which comes is several sizes). Also, since a joist is being cut, it should be replaced with sistered 2x10's (2x8's min.) and reinforced with metal joist hangars and corner braces.

Don't forget, the clock will be sitting on a new (lowered floor) which will also need to be supported. You'll have to create FJs for that, too

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Are moons geologically active?

It's important to point out that geological activity on moons is not only common, but its at the core of modern space exploration. Because moon geological activity is often caused by tidal forces, the activity correlates with heat. Tidal forces create friction, which in turn creates heat. Moderate heat is an important part of creating an atmosphere and nurturing life. The moons Europa and Titan both are geologically active present the best chances for finding organic life in our solar system

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Unbreakable microwave safe plates?

With those requirements I'd start looking at "camping dishware" usually meant for camping and/or RV's; preferably in a polycarbonate material. There's a line of products by GSI that are made with a polycarbonate resin. This is (for all intents and purposes) the same material that those indestructible camping water bottles and chambro food containers are made out of. There are loads of names for polycabonates, GSI calls it infinity. Here is the GSI infinity plate and the GSI infinity bowl

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Placing object on uneven surface

If you don't want to go to the expense of simulation, a rig can get you quite close:Now when you move the triangle, the toast will more-or-less conform to the plate. You can tune the resolution of the Lattice and influence of the Lattice modifier to make the toast more or less soggy, and the offset in the Shrinkwrap modifiers to control the proximity of the toast to the plate.EDIT: A duff version of the blend replaced: 1400 GMT 19 March.

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Can anyone identify this old wiring in my walls?

Likely an old intercom system. These used to be quite popular in the 60s and 70s, but are often removed or inactivated, leaving behind mystery wires in the walls.The smaller wires are speaker/signal wires for the units and the larger wires to power the systems. The signal wires wouldn't carry any voltage without units installed and the power wires were likely disconnected at the breaker when the units were removed, hence no voltage on any of the wires now.

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How can capacitance be defined as $CQ/V$, yet an increase in charge will not increase the capacitance?

Such formulas ($CQ/V$, $vflambda$ etcetera) are relations between physical quantities. In this kind of cases, the formula must not be interpreted in a sense that capacitance or speed of propagation are functions of the the quantities to the right, and certainly not that the quantities to the right are the causes of that speed or that capacitance.It needs some experience and insight to understand this things. Teachers and textbooks should probably point this out more often

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Voltage doubled on capacitor

Once the capacitor is charged, it's a 3V source with a polarity opposite the battery, so the net voltage is 0. If you flip it around, it's another 3V source in series with the battery and with the same polarity, so they add to 6V.That said, why it only discharges to 1.5V is more of a mystery. Is the cap polarized? An electrolytic/tantalum might leak in the reverse direction, but one doesn't often encounter these types in the sub-uF range.

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What are these metallic plates found around Iceland?

This is a day and 5 years too late, but it seems to be a solar compass with markings as mentioned showing the directions of different landmarks.Problem is that it also has hours marked on the dial (including nighttime hours). But as it is currently configured couldn't possibly function as a sundial. If it was, the pin would need to be located at least a few inches north of the center of the dial, and this is clearly not the case

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Electromagnetic accelerator in space

According to Newton, for every action there is an equal and opposite reaction. As the magnets were applied to the craft, it would apply as much force on the accelerator. The accelerator would have to be very massive and/or have rocket engines to generally maintain position and maximize the force imparted on the spacecraft. Of course assembling such an accelerator would require many launches plus maintenance flights etc. The economic advantage in creating such a platform could be quite challenging

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How do Han and Chewie find Rey and Finn in the Millennium Falcon?

According to the film's junior novel, it was because Rey didn't put the deck plate back down properly:Her current operators werent hard to find. A deck plate in the lounge wasnt flush with the floor. Chewbacca tore it free and Han pointed his blaster at two youthsa male and female, both humanand a newfangled round-modeled droid. The youths raised their hands in surrender.We actually see this in the film, although it's not made especially obvious:

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Boilerplate mod messages are impersonal and leave users confused

I personally (as a mod) usually don't use the templates. I think, in this case, when you have to suspend an active member, you should write a clear and personalized message. If a mod uses a template without any modifications, it shows disrespect.

I can imagine only one situation, when it's (probably) ok to send such messages - if there a lot of flags and moderators do not have time to handle them. Otherwise it just looks like laziness and disrespect

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Interesting real life applications of serious theorems closed

You cannot create a "good" (continuous) function that for each 3D direction (unit vector) gives you an orthogonal direction.Seriously. You cannot construct a "good" perpendicular to a vector.Why? Blame the Hairy ball theorem. If you could construct such function $f(vec v) : forall vec v f(vec v) perp vec v $, then you have essentially constructed a continuous tangent field for a sphere $vec v to vec v times f(vec v)$ which is impossible for dimensions greater than 2.

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Can a sorcerer/war cleric wear plate and cast sorcerer spells?

To be able to cast spells in armor, you must be proficient with that armor. Class does not come into it.You must be proficient with the armor you are wearing to cast a spell. (PH p.201)A first level war cleric is proficient with heavy armor.

There are other restrictions regarding armor, such as strength requirements, or that a druid will not wear medium or heavy armor made of metal. But these restrictions are not directly related to spell casting

How Does Charge Gather on Both Plates of the Capacitor? 1

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