why do some objects get charged positively by an object and with other it gets negatively charged?
829074
this phenomenon is called induction it occurs due to relative accumuation of electrons in the objects having more electrons we have a negative charge....in objects having loss of electrons we get a postive charge..
383164
basic answer: if the scope is charged, that means there are an excess of like charges all stuck together. like carges repel, but they have nowhere to go since there are no conductors around. you're body, mostly water, is a decent conductor, so when you touch it, the charges are free to move farther apart from each other by going into your body. the charges leave the scope until the excess charge is neutralized.\n\nmore accurate: actually, positive charges don't move, since positive protons are stuck in the atoms, but negative electrons are free to move in a conductor. when something is positively charged, it didnt gain positive charge, but lost electrons. when you neutralize it, electrons flow FROM your body to the scope. this is really the same as a net positive charge leaving the scope, but that isnt whats actually happening at an atomic level
944281
+ve charge on one, -ve on the other....static electricity
350588
It's a bond where electrons are shared between elements.  As opposed to ionic bonds where the charges make the bond.
430634
Electric charge is a characteristic of subatomic particles, and is quantized. When expressed as a multiple of the so-called elementary charge e, electrons have a charge of −1. Protons have the opposite charge of +1. Quarks have a fractional charge of −1/3 or +2/3. The antiparticle equivalents of these have the opposite charge. There are other charged particles.\n\nThe electric charge of a macroscopic object is the sum of the electric charges of its constituent particles. Often, the net electric charge is zero, since naturally the number of electrons in every atom is equal to the number of the protons, so their charges cancel out. Situations in which the net charge is non-zero are often referred to as static electricity. Furthermore, even when the net charge is zero, it can be distributed non-uniformly (e.g., due to an external electric field), and then the material is said to be polarized, and the charge related to the polarization is known as bound charge (while the excess charge brought from outside is called free charge). \n\nAn ordered motion of charged particles in a particular direction (typically these are the electrons) is known as electric current.
942411
a proton is said to have a positive charge because work must be done to move another positive charge from infinity to the point where that proton is.\nan electron is negative as energy is released when a unit positive charge from infinity to the point where that electron is
352142
There are different types.\n\nHowever, the gold leaf electroscopes have two very thin leaves (not necessarily made of gold) attached to a conductive rod. The rod has a metal knob at the other end.\n\nWhen some charge is imparted to the knob, the charge flows to the leaves. As the two leaves same type of charge (either positive or negative), they repel each other.\n\nAmount of charge can be estimated by the amount of separation of the leaves.
223324
I think you are asking how a positive charge came to be called positive, and a negative charge came to be called negative. To answer this, one has to look at the history of electromagnetism. The history of electical charges is closely connected with the history of magnetism, since they appeared to be similar phenemona.\n\nStatic electricity has been known for a long time. The Greeks had found that rubbing an "elektron" or piece of amber with fur, the elektron would attract pieces of straw and feathers. The Greek mathematician Thales first recorded this observation about 600 BCE. \n\nThe attraction demonstrated by the elektron was often confused with the attraction and repulsion observed using lodestones, which had been known for a while. For example, Pliny in 900 BCE published an account of a Greek shepherd named Magnus who found that a field of black stones (lodestones) attracted metals. These fields were in a region that came to be called Magnesia (It is more likely  \nthat Magnesia is named after the Magnetes tribe that fought in the Trojan War, however). \n\nA Chinese general named  Huang-ti might have been the first to make a compass out of lodestone. Compasses were in common use in the military in China during the Han dynasty (206 B.C.E. to 220 C.E.). A few centuries later, compasses were used on Chinese ships for navigation. \n\nThe first known Western reference to the use of the lodestone as a compass is in the English scholar Alexander Neckham's book "De naturis serum", published about 1190. Apparently by then the lodestone was in common use on European vessels for navigation. \n\nIn 1269, Peter Peregrinus of Maricourt (one of Roger Bacon's teachers) published a treatise known by its shortened title as "Epistola de magnete" in which he clearly describes magnetic polarity. Peter also described the phenomena of like poles repelling, and opposite poles attracting.   \n\nIn 1550, Gerolamo Cardano, an Italian physician, mathematician and inventor outlined the differences between the amber effect (static electricity) and the lodestone effect (magnetism) in his book "De subtilitate rerum". Cardano also described many of the properties of magnets, attributing magnetism to the flow of "fatty humor" to which dry things adhered.  \n\n\nWilliam Gilbert, an English Physician, building on Peter of Maricourt's work, published "De Magnete" in 1600, in which he also clearly distinguished between the lodestone effect (magnetism) and the amber effect (static electricity). Gilbert was probably the first to realize that the earth itself had a magnetic field which was causing the forces on the lodestones. Gilbert dismissed some of Cardano's theories of magnetism. Gilbert explained static electricity as a fluid that is liberated by rubbing. Gilbert explained the dip of the magnetic field observed by English compass maker Robert Norman (1570-1600).\n\nNicolo Cabeo, a Jesuit mathematician, was the first to record the phenomenon of electrical repulsion in his book "Philosophia Magnetica". Cabeo noted that small objects attracted to the amber would sometimes later be repulsed. &#92;\n\n\nOtto van Guericke, a German politician, engineer and scientist experimented with vacuums and magnetism, and produced a variety of machines for producing electric charges, producing his first machine sometimes around the period 1650-1663. In 1672, he noted that he could make a ball of sulfur glow by charging it. He also is the first apparently to note that like charges repel.  \n\n\nIt was found that these charges could be stored in a glass jar lined with silver foil, first by  Ewald Jürgen Georg von Kleist, a German clerk, inventor and Church dean in 1745, and later independently by Pieter van Musschenbroek of the University of Leyden in the Netherlands, in 1746.  This device came to be known as a Leyden jar for this reason (it is interesting that von Kleist had been a studen
344411
It is just the equalizing of electrical charge between two people or a person and a conductive object.\n\nFor example, if your dragging your feet on the carpet, you are building up a greater negative electrical charge on your body.  When you come in contact with someone who has less negative charge than you, nature tries to make everything equal by sharing some of your negative charge.  \n\nSimilar concept if you add saltwater to pure water, the mix shares the salt with the "less salty" water.  Now the pure water is more salty, but the salt water is less salty than it was.  Hope this helps.\n\nThe link below is a bit more complex, but explains the underlying priciples.
329072
try out an electrolysis experiment with the battery u wil get to know abt the charges of the battery the place where the metal move is the negative charged one and where the non metal moves tht is the positive terminal
789315
An atom is always assumed to be neutral unless otherwise denoted.  A neutral atom can become positively charged, for example, with a charge of 2+ when it loses 2 electrons (oxidation) to another atom in a redox reaction.  The other atom, in turn was reduced (it's oxidation state or number), or gained electrons and subsequently, a negative charge.
710065
atoms of positive charge are lighter than negative.
399371
Basically, when you rub two certain materials, you will create static electricity, which is named that way because the charges do not _flow_, i.e. there is no current.\n\nNot so basically, but still very primitively, there exist two forms of material: ones that "likes" to "steal" electrons, and ones that "likes" to "give" electrons. Whenever these two are put next to each other, the electrons "jump" from one substance to the other, causing a potential difference, and possibly a spark (if the potential difference is high enough).\n\nRubbing two such materials does not cause this effect. It is a common misconception; when you rub two things you are simply increasing the surface area of contact between the two such substances, thereby creating a more noticeable effect.\n\nand the check spelling button screwed up some of my spelling. fix it yahoo! people, please. especially with the word 'effect' which was changed to 'effectt' and the plural of some words.
457025
they discharge when there is no longer anything charging them. they charge because a voltage is put across them, which causes charges to collect on opposite sides. when the voltage is removed (or short cicuited) there is nothing forcing the opposite charges to opposite sides. the capacitor discharges because opposites attract, and these opposite charges are now free to cancel each other out.
31810
When an atom or molecule has the same number of protons and electrons, it is considered neutral.  If it loses electrons (which have negative charge), the particle becomes positively charged.  If it gains electrons, the particle becomes negatively charged.
651198
b) The surface to be plated is charged negatively
378224
When a strong electroltye is seperated (dissociated) in water, it seperated into both negative and positive charges, these charges are attracted to the electrical conductors to give it energy to light a light bulb. Try it with salt and water, like NaCl.