Which form of current would be able to burn through jail bars. AC or DC current???
437234
More than likely DC.  By using direct current you are always keeping one end the anode and the other the cathode, one side always is "giving" and the other end always "recieving."  DC systems have a tendancy to corrode one end and slowly eat away at it.
989966
First, to the basics...\n\nAC is Alternating Current.  This means that the current moves in one direction and then the other, changing at a frequency of 60 time per second, its unit of measurement being Hertz (Hz).  The generator produces this current at very high voltages which are sent down the transmission wires to local substations, where the voltages are reduced to the familiar 110 volts which appears in your electrical panel.   At the transformer of the substation, the transmission lines to your house are isolated from the ground and "float".  This means that there is no path for the current to flow from either wire to the ground or to each other.  Now, in order to use the power (which is a product of the voltage times the current)  the current must flow through a load, which is any energy using device from a light-bulb to a toaster to the pump on you washing machine.  Since both sides of the wire (both the black (hot) wire and the white (neutral) wire) are isolated from ground to begin with, attaching the neutral to the ground does not provide a path for current flow.  Only if a path is made from the black to the white wire will there be current flow.   If we connect a lightbulb between the black and white wires, we will complete this circuit.  Remember that power (measured in Watts) is the product of Voltage (measured in Volts) and current (measured in Amps).  If we know the amount of Voltage (110V) and the power used (say 100W in a light bulb), we can figure that the amps used are 100W / 110V = ~.91 Amps.  If the circuit breaker is rated for 15 amps, it would require at least 17 of those bulbs to exceed the capacity of the breaker and cause it to trip.  I hope this clears things up for you...
643695
From electricity...the term alternating current/direct current.
2627
I could suggest several considerations.  First P=IE, that is Power equals the electrical current (I in Amperes) times the voltage (E in volts).  Current is like the flow of water in a pipe and voltage is like the pressure causing the water to flow.  If you use the water to drive a hydraulic piston (say to hoist an automobile for repair) you can use either a small piston and high pressure or a larger piston and lower pressure.  Which is more cost effective?\n\nIn the United States, electric power is delivered to neighborhoods using three wires (three phases) strung along telephone (power) poles.  Only two of the wires are led to a single residence but the neighborhood must use all three wires to balance load on the wires.  Within a house electricity passes from only one wire (phase) to ground or earth to light a lightbulb which uses 110 volts.  The clothes dryer that needs far more power is connected between two of the supply wires (two phase) and to ground to supply 220 volts.  A machine shop might connect a very large motor to all three supply wires to obtain even more power at 440 volts.\n\nSix volts or even 12 volts DC in an automobile circuit can be touched with little danger.  It is less dangerous to accidentally touch a 110 volt AC wire than a 220 volt source and 440 volts is most dangerous.\n\nTherefore, the selection of voltage depends in part on safety and then on the size of the job to be tackled and also economic factors.  The higher the required current, the larger the required wires using expensive copper.  Increasing the voltage reduces the needed current and reduces the needed copper to do a given job.  The higher the required voltage, the more expensive the required electrical insulation will be.  Engineers must determine the best trade off of many factors.
756481
Normally this is a "Restive" not voltage question/answer, and the proper neutral to ground = 2 Megg ohms (min.) this being incorporated in a residential application.\nHigher voltage in let us say a 3-phase utilization this # is on the low side. (assuming a.c. source. d.c. is a completely different animal!
372456
To measure ohms, DCV, ACV, Amps or what????
199078
BATTERY AND CRAP???? lolz...wat exactly were u tryin to say!??! guy said he uses AC power not BATTERY..'nd i....errrrrm.....ammm..i dunno wat to say...guys help him out.... yo man..tc...!!
509688
This is to the person who made the answer with the reference to AC/DC meaning bisexual in Britain.  OK, one: they are from Australia and would probably kick your ass for saying they got their name from British slang and two:  they got their name by looking at the back of a clothes dryer where it had the abbreviation AC/DC, which means alternating current/direct current... which is an electricity term.  They thought it sounded cool because it was power and they took the name hoping fans would understand that they were powerful.  At least that's what they said on "Behind the Music".
523186
I'm sorry everyone seems so eager to assume that anyone behind bars is automatically a dangerous, evil creature.\nMany people in jails have not even been tried yet for a crime, let alone convicted.\n\nTo report unsafe conditions, first write to your county building inspector, fire marshall and/or health dept. If that does not get the situation corrected, contact the ACLU\ngo to this link to find your local chapter http://www.aclu.org/\n\nUnsafe conditions can also be of interest to local media, so you might send copies of your letters to local news outlets....nothing like headlines to get folks off their back pockets.\nFor failure to provide medical care, first address the jail administrator, then contact the ACLU.
45105
logic would tell me that it would be DC current, since the electrical sytem of the crane is probably DC.
485074
We convert AC-DC but why (or how) would you convert AC-AC? At the most there may be a half wave or full wave rectifier but that has nothing to do with induction. I sure can't understand your question.
206554
1 amp (1000 millamps) is the maximum rated operating conditions for the transformer.  You may be able to get more current than that from the transformer, but the rest of its specifications (such as output voltage, operating temperature, efficiency, etc) are no longer guaranteed to be accurate.\n\nIt would be a good idea not to exceed this current draw if you want the transformer to last, and not pose a fire danger.  Consider using a fuse in your circuit to prevent overcurrent conditions.
167412
My suggestion would be to use a d.c. motor .  Incorporate the following : A D.C. motor, 2 momentary contact up/down switch, a reversing relay that would switch positive and negative when switching from up to down . Associated micro switches and ice cube relays to sense position and stop motor when destination is reached. Some form of safety clutch,light curtain etc. And a rectifier to convert house hold alternating current to D.C. . An alternative would be a reversing A.C. motor and associated similar controls less rectifier. Similar installation difficulty , my decision a/c vs d/c would be based on price and availability.
550137
It depends on the conductivity of the metal and how long they're connected to each other.  If you hook them up with one small wire, the wire will get hot and possibly burn after some time.  However, if you do it for a very short time, it won't be a big deal.  It's not good for the battery, sure, but it won't kill you.\n\nHere's a mildly interesting experiment.  Tune your AM/FM radio to any frequency.  Take a 9V battery and a nickel (or quarter) and tap the battery so the nickel touches both leads.  You'll hear your taps on the radio.  Explanation of this can be found in the link below.
218186
AC (alternating current) can be transformed into a DC (direct current) by means of a rectifier or bridge rectifier circuit depending on the AC circuit.\n\nA single AC line to ground or common an be rectified by the use of a single diode. This is a crude dc circuit.\n\nUsing a dual AC line, not grounded, where there are two lines, both above ground, then a full wave bridge rectifier can be used. Four diodes are used which rectify both the positive half as well as the negative half of the AC waveform.\n\nThen there is the 3phase rectifier bridge which uses 6 diodes, converting 3 AC lines, they are 120^deg outof phase of each other. Most industrial machines are using 3 phase power.\n\nMachines using this 3 phase power usually have a Motor Control Center which house a AC Drive (AC to DC to AC) inverter. This drive uses devices called IGBT which are active diode devices providing controlled amounts of power at variable frequency to run a machine.\n\nTo smooth out the DC waveform a capacitor bank is attached to the output of the DC bridge rectifier. \n\nAs you drive by an industrial park you will notice three power lines usually connected to each building. This is the 3 phase power. \n\nLarge Hybrid electric vehicles use such machines.
1040867
Using 3 phase current, it is possible to get 3 times the energy down the same wire - so it is much more efficient.  Each phase is 120 degrees out from the others, so the signal looks kind of like braided hair, when one phase is at the peak, the other two are crossing at 70%, one going up the other going down.  Once we get the energy to where we want to use it, then we can tap off the different phases for single phase use. \n\nI forget about the delta and wye stuff, it's been a while. \n\nCheers!
206602
In D.C circuits current flow is  always  in one direciton.\nIn A.C circuits current is fluctuating that is changing its direction periodically, say 50 times per second or 60 times per second. But in A.C when the current is switched off suddenly in some circuits having coils and condensers there will be back emf and sparks will be prduced in the switching system. Normally the device is manufactured taking this into account.