How do electric eels generate a voltage and why do they not get shocked in the process?
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Electric eels are not true eels, they are only eel-like in shape. Electrophorus electricus is famous for its ability to produce strong \nelectrical currents, reaching 500-650 volts. This strong discharge is used to stun or kill prey. This electrical discharge is also used to ward off potential predators.\n\nUp to 6,000 electroplates are arranged like a dry cell in the eel's body. Its internal organs are all in a small area behind the head, with 7/8 of the eel being tail. The electrical shocks come from muscles mainly in the tail portion of the electric eel's body. The body of an electric eel is similar to a battery. The tail end of the eel has a positive charge and the head region is negatively charged. When the eel touches its tail and head to other animals it sends electric shocks through their bodies. When the eel is at rest, there is no generation of electrical impulses.
924272
the amount of voltage initially on a capacitor will be whatever voltage you charge it to. It will never be any higher unless there's other circuitry involved.  The current (Amps) will flow at a rate decided by the resistance it is emptied into.  To use the common water pipe analogy, the voltage is the amount of water pressure, and the amperage is the size of the pipe.\n\nA capacitor is like a water tower.  There's lots of voltage, because the water's trying to get to the ground.  If you put a small hole in the water tower, you have a high resistance path to ground.  Your voltage will slowly fall as more of the water drains out.  the current will start fairly slow, and gradually fall along with the voltage(there's less pressure pushing it).\nIf you were to blast a big hole in it with a stick of dynamite, you would have a huge amount of flow(current/Amps), but the voltage would fall quickly, and the current will follow.\n\nit all relates to ohms law.  Voltage = Current * Resistance\n\nor you could re-arrange it to calculate your current, based on the voltage you've charged the capacitor to, and the resistance you're draining it through.  Current = Voltage/Resistance\n\nI knew a physics teacher who would demonstrate this to his classes by shorting a very large capacitor, which was charged to 12V with a screwdriver.  It would make a huge shower of sparks, and often partially weld the screwdriver to the top because of the huge currents.  He'd then charge it up again and would ask if anyone wants to put their finger on top of it.  Nobody would of course, but he would then do it himself and get no shock at all.  The resistance of skin is high, so with only 12V there's almost no current flow, even though there's a huge current capability if you give it a low resistance.\n\nIf you want the capacitors you're playing with to last a long time, though, you're best charging and discharging through a resistor.  Very quick charges and discharges create hot spots inside the capacitor, and will eventually damage them.
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Friction in some materials causes electrons to be knocked free, resulting in a buildup of negative charge.  Enough of that builds up in your clothing and it's going to want to equalize itself by going to ground - a doorknob for example.  It gets there through your finger.  Static electricity shocks are basically a scaled-down version of what happens when lightning hits the earth.
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a. The bear has completed a circuit between the cable and the ground.\n\nElectrical current takes the path of least resistance and will flow through him rather than through the air which has a low conductance.\n\nSince the bear has a resistance the electrical energy will do work (the energy it takes to move electrons from one potential to another) to over come his resistance and some of the energy will be transferred to heat.  This is why people who are electrocuted will burn from the inside out.
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When electricity is given, the bulb glows because of the power dissipated from the tungsten. This is because of the heat produced when current flows through the filament. So when the current is switched off, no current flows through the filament causing the heat not to be created. So the bulb stops glowing and light energy is not given out.\n\nSince no electric energy is given, no light energy is given out. The already produced light energy (before shutting off) i.e. the photons, are absorbed by surrounding objects so that it no longer produces light.\n\nThe photons are the smallest unit of light like cells in biology. Photons have energy in them. These energies are absorbed by surroundings.
57062
When u apply potential difference to 2 ends of conductors this free electrons being negatively charged get attracted towards + potential. This results inflow of current.
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when an atom loses an electon from its outermost shell then it forms an electropositive ion while when an atom gains an electron it forms an electronegative elctron.\n\nfor e.g. during the formation of nacl na atom loses an elcron to the cl atom to form a +ve ionwhile the cl atom which gains that electon forms a -ve ion.
910437
Depends a lot on the type of bulb but assuming an incandescent it would be virtually instantly. Remember from physics that the electron current  velocity does not have to be very high at all because what is actually happening is a displacement of electrons throughout the entire length of the wire. It only takes a few extra electrons per linear meter to produce a rapid displacement of electrons throughout the wire\n\nSorry DW electrons do not travel at C in a wire. That is a bad misconception propagated by incompetent high school physics teachers.
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The electric eel (Electrophorus electricus) does not produce a _small_ electric shock, but a strong and dangerous one.\nHowever, there are several species of freshwater fish that are related to electric eels (they belong to the same order Gymnotiformes) that produce weaker electric pulses; these are the knifefishes (genera Gymnotus, Ramphichthys, Eigenmannia). \n\nIn addition, there are several fishes that can produce electric fields and eventually shocks: all true rays (genus Raja and others), torpedo rays (genera Torpedo, Discopyge, etc), the electric catfish (Malapterurus electricus), electric stargazers (genus Astroscopus), the elephantnoses (Mormyridae), etc.
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Power induction occurs when some material that can conduct electrical current is moved through a magnetic field.\n\nThe newest type of flashlight (sometimes called "shake flashlights") uses this principle. When a shake flashlight is shaken, a magnet slides back and forth through a copper wire coil. The electricity produced as a result is then stored in a capacitor (a capacitor is an electronics component that will store electrical energy) instead of a battery.\n\nPower induction can also occur between individual lines of a high-voltage power line system.
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How will he SHOW that an electric current has been produced? It won't be sparking or anything like that.\n\nHere's a very crude, but effective way to prove an electric current has been produced. Buy a D-sized battery and some non-insulated wire. Using thick gloves, place one end of the wire on the + side of the battery and the other end of the wire on the - side. Hold them in place. Almost immediately, the wire will become very hot. The heat produced is due to friction. The electrons (electric current) traveling from one end of the battery to the other rub against the particles that make up the wire. The rubbing produces heat, like when you rub your hands together really fast.\n\nAs an added bonus, wrap that same wire around a galvanized nail about 8 times, (be sure to leave both wire ends free)then repeat the steps above. The nail becomes magnetized and will pick up paper clips. The more coils you wrap around the nail, the more magnetized it will be. This is called an electromagnet because a magnet was produced by an electric current.
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well if i am not wrong.. they work on the principle of thermionic emission... \n\nnow wat happens is ... at the cathode end ( negatively charged) there is a metal bit.. called emitter  and at the anode end( positive terminal) another metal called the receiver. the tube is vacuated and filled with gas, in this case a halogen vapour. \n\nwat happens is when a potential is applied, when we switch it on, the cathode emits electrons.\nthese electrons pass thru the vapours and ionise them. when ionised these gases emit energy in the form of light..\n\nthis is the explanation in the most condensed form... equations make it complicated for understanding... \n\nhope i did justice to ur query
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Partly, it's the path the electricity takes.\n\nBut remember, it's not the volts that kill ya, it's the amperes.\n\nI once shorted out the entire electrical system of an old car engine with my bare hands (don't ask why; I was an idiot)  This was thousands of volts - but there's so few amps going through the distributor that all I got was a nasty jerk and a really funky hairdo.  \n\nBut just because I survived that stupidity - don't try it.  You could get a big boo-boo.
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The "power" in any electric current is 'voltage'.\n'Voltage' is the measure of the potential difference of electrons between two substances, and therefore the potential for electrons to be transferred between them.\nBatteries generate electricity through any one of several electrochemical reactions.  \nTwo different types of metals are placed in a catalyst (usually a liquid).  When a circuit is completed between the positive side and the negative side, electrolysis occurs - the above mentioned transferring of electrons through chemical reactions from one metal to the other.  The difference in potential felt between the  positive and negative charges (giving off an electron results in a positive charge, accepting it results in a negative charge) is again your volts.\nThe reaction continues until the battery reaches homeostasis (equilibrium, balance).\nIn some kinds of batteries applying an outside electric current properly can reverse the process - allowing you to recharge the battery.\nRechargeable batteries eventually become exhausted because of of oxidation of the polarizing metals or due to a 'memory' buildup.  'Memory' refers to a battery that is not completely discharged before it is recharged.  This is the major reason for the degradation of rechargeable battery life cycles.
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The voltage can reach levels of over 500,000 volts  when it comes out of an eletric plant.  \n\nThe high voltage electric current travels through transmission lines. A second set of wires is used to carry the current back to the generator. These wires are there because electric current travels in a closed circuit. High-voltage substations are places where very high voltages are reduced to lower levels. High-voltage power lines enter and leave the transformer through large insulators. These insulators are used to keep the high voltages away from the metal tank containing the transformer coils. Oil flows around the coils to keep them cool. \n\nThe electricity now travels from the substations to transformers in your neighborhood. These transformers, called "Step-Down Transformers," lower the voltage still further to make the voltage safe for ordinary use in your home. Inside these transformers are coils of wire which help reduce the voltage to 120/240 volts which then can be used safely in homes. \n\nThere is no energy wasted along the process. Remember that energy cannot be destroyed but can be transformed. There is no transformation of energy on the process thus it is not wasted.☺
54282
I think that the question must be -What is an electrical insulator?-, because it's material that does not have much free electrons, so the energy to make them jump out of the atom is so great that in normal situations (unless the voltage is really big, like a thunder) the electrons won't flow through it.
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An induction coil liberates only very high voltages- high voltage electricty does not in itself stimulate the emission of any type of radiation. Hoever if you use that high voltage to produce beams of high energy electrons you can start doing damage- A simple x ray generator would consist of a high voltage supply which would accelerate electrons to a high velocity- this electron beam would be further focused by secondary electromagnets and strike a metal target, x rays will be produced at the target as a result of the high velocity electrons striking the target.\nThis is all pretty simple stuff and can be done (with some skill in a home laboratory) My advice however is DONT- you will probably fry yourself!!