What the most common electrical hazard? What are the hazards that can cause injury to humans?
397478
Ah, someone was just killed today in Florida by a lightining bolt to the back of the head.
756297
A short circuit happens when a wire connected to the voltage source goes to ground (negative in this case), so a loose connection at the load can cause a wire to vibrate loose and make contact with ground.\n\nMore commonly, a loose connection will generate enough heat to melt wire strands, which generates more heat, eventually melting the whole wire at that point.  The result is usually an open circuit, with no further damage.  A short circuit will blow the fuse in the line if there is one, or keep melting things until the battery connection or line connection is melted open.  The intense heat generated may start a fire.
858637
hmm...surge somewhere.  Could be very dangerous, though.  Call electrician tomorrow.
564120
Lightning strikes can travel large distances along wires since wires are made to conduct electricity really well.\n\nTherefore, there is an increased danger to using anything plugged into the wall by cords of any type.  This includes the phone, computer (unless on a wireless laptop), or even the sink (water also conducts electricity quite well along pipes).\n\nNow, the danger isn't extreme.  I can't give you specific numbers, but I do not believe that many people are hurt each year by lightning strikes.  Surge protectors do offer electronics some protection from overload... but can't protect you if a large enough surge comes through the line to fry you.  Generally only very nearby strikes are dangerous.\n\nMy own personal advice: don't worry too much about electrocution from thunderstorms when inside unless the storm is abnormally frequent when it comes to lightning.  It's a choice you make.  Even in a "safe room" you are still in some danger of a direct lightning strike.  Life is short and you should live it.\nHOWEVER, that's my opinion, and playing it safe is never bad.  Each strike is a small gamble... and some people do end up losing.\n\nHere's a bit more info on indoor lightning safety from the National Weather Service:\nhttp://www.lightningsafety.noaa.gov/indoors.htm\n\nI wish you well,\nGod bless,\nShane
306981
Electricity is a property of matter that results from the presence or movement of electric charge. Together with magnetism, it constitutes the fundamental interaction known as electromagnetism. Electricity is responsible for many well-known physical phenomena such as lightning, electric fields and electric currents, and is put to use in industrial applications such as electronics and electric power.
525755
anything that is dangerous to the enviroment and humans and animals. For example nuclear waste is highly dangerous and is handled by people who wear protective clothing and is put into big containers and stored hundreds of meters below ground in concrete. Also it is dumped deap in the oceans
12507
A brief explanation of what's going on - in the dry weather, you're building up static electricity on your body as you walk around. When you touch a metal object (like a doorknob) that has very little electric charge, the charge is transferred to the other object.\n\nSo, the short answer is that to prevent the annoying shocks, you need to avoid building up electricity, or keep discharging it to objects. Touching metal frequently will help. Also, you can avoid some of the annoying effects by touching things with something other than your fingertips first - for example, the back of your hand. Your fingertips are very sensitive, and it may not be as unpleasant to get small shocks on other parts of your body.
92774
Radiowaves do hardly anything. No harm\nMicrowaves and infrared heat your body\nVisible light makes you visible and psychological healthy.\nUltraviolet can make you blind.\nX- and gamma rays go throught your body and make damage.\nFrom up to down, the more dangerous.\n\nFor all EMW: the more intensity, the more dangerous.\nthe more time of radiation, the more dangerous.\nThe closer to the source of the radiation, the more dangerous.
965850
EMP can also travel along anything that conducts electricity, not just through the air. Examples of this include phone lines, power lines and network lines . With that being said, any electrical device that is turned off but plugged in, can be "fried".\n\nEven devices not plugged in can also be fried, depending on the intensity of the EMP pulse.\n\nSince there are also wires and many electrical and computerized components in modern cars, the same can also be said for modern cars that are turned off. The same can not be said for older, carborated cars with fewer electrical and little to no computerized components.\n\nUltimately, it really depends on how powerful the EMP pulse is.\n\nI also watch Jericho and had the same questions you did, so I looked up the answers on the internet and posted my source with my answer.
574630
If you can find and cut the power supply do it. Otherwise try to pull the person by grading him from the clothes DO NOT touch his skin with your bare hands 'cause you'll be electrocuted too.
368196
electrical shock is no joke if your talking 110vac or higher, it can cause heart failure you should be monitored for 24 hrs, also you could be burnt in the inside of your body. less of 1 amp can kill you
574352
A low-voltage (110 to 220 V), 60-Hz AC current traveling through the chest for a fraction of a second may induce ventricular fibrillation at currents as low as 60mA. With DC, 300 to 500 mA is required. If the current has a direct pathway to the heart (e.g., via a cardiac catheter or other electrodes), a much lower current of less than 1 mA, (AC or DC) can cause fibrillation. Fibrillations are usually lethal because all the heart muscle cells move independently. Above 200mA, muscle contractions are so strong that the heart muscles cannot move at all.
56102
oil, coal, natural gas.\n\nancient plant matter.\n\nIt depends on how old the human is. An adult has 206.\n\nIt isn't. But it might be just as bad, depends on the chemical and the duration and level of exposure.\n\nHuman Immuno-deficiency Virus.
748793
Not just a power surge will cause an electrical trip.... \nNormally a safety device or circuit breaker will 'trip' when it is detecting too much load...eg a faulty appliance, too much appliances plugged in (use of too many adaptors), or hot electrical joint (loose), undersized protection etc.
557631
Current kills, not voltage.\n\nThe number of volts in an electrical is not so much as important as the current (amps) which are carried through the body.  If you have ever been shocked by static electricity or a Van de Graaf generator, you have experiences (and lived through) shocks of very high electrical potentials (very high volages), but the current was just too low to really effect you.\n\nIt does not take much current to stop a heart, just a few tenths of an amp (not a lot at all) can kill you if it runs through your body the right [or in this case, wrong] way,\nhttp://www.physics.udel.edu/wwwusers/watson/scen103/colloq2000/safety.html\nhttp://www.physics.ohio-state.edu/~p616/safety/fatal_current.html\n\nBut to get back to your question,\nit is entirely possible to be killed by sticking a screw driver into an electrical socket...this probably wouldnt be a good thing to test out though.  If you are grounded when you stick the crew driver in, the current could travel through the screen driver, into your arm, perhaps through your chest and heart, and down your leg.
881901
Have a look here: http://en.wikipedia.org/wiki/Cathode_ray_tube Scroll down to the Health Danger section.
754481
You can definitely build up enough of a static charge to damage electronic components. The usual procedure is to work on a grounded surface and connect yourself to it with a wrist strap. Lacking that, wear cotton and touch the computer chassis to ground yourself before touching any circuit components.