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If you had a multimeter and plugged it into a 120V wall outlet what electrical current would it read?
If the meter was set for "current" (amps) and the leads were connected to the current input, you hope it will read 0. -- It should blow the fuse inside. If the meter is set …for volts AC, it should read anywhere between 108 and 132 volts. If the meter is set for volts DC, it should read close to zero. If the meter is set for resistance (ohms) it would probably display an unstable reading, or could damage the meter. And finally, is this a trick question, and you are really talking about a 120V AC powered benchtop multimeter? In that case it would read whatever current is flowing in the circuit under test, provided the meter is set up correctly. A multimeter can test: ac current with a clamp on meter around one wire or ac or dc current in series with the load. A multimeter cannot test dc current with a clamp on meter (there is no frequency in dc to create a field) Another answer I would think someone asking a specific question about a multimeter would assume that person knows what they're doing, and would connect it correctly. When I connect my multimeter to the 120V wall outlet I get 126 volts - the display is stable to within about a half a volt. I have a Keithley multimeter, as well as a Simpson analogue VOM. I just measured line voltage again, this time getting 123 volts. This is reasonable, as there is no load on the line. With the toaster on, it drops to 118 volts. This is probably within whatever tolerance is built into the system. Comment: Because the standard tolerance for 120 volt services is " + or - 10%", those voltages you measured are certainly ok: those readings fall between the minimum tolerance limit of 108 volts and the maximum limit of 132 volts. The actual voltage you are using at any instant in time doesn't only depend only on the load you have applied to the branch circuit, it also depends very much on: the length of cable-run from the step-down distribution transformer nearest to your home (located in an area substation or up overhead on a pole in the street) and how many of your neighbors are putting on their electric toasters and/or kettles at the same time as you are! Voltage or current? I notice the question mentioned both voltage and current. I don't know whether this was a typo. It would seem strange to ask how many volts you get from a 120V socket. The voltage version of the question has been answered quite comprehensively, so I'm going to answer the current version. Voltage and current are different things, not just the same thing measured in different units. It doesn't make sense to ask "how many volts in an amp?" (which is essentially the question that's been asked). Electricity is analogous to water flowing through a pipe. Voltage is like the pressure difference between the two ends of a pipe; current is like the flow rate (in liters per second). In an ideal world, an ammeter (current measuring device) has resistance 0, while a voltmeter has infinite resistance. Obviously, these are only ideals which can't quite be reached in practice. So the question is: Just how low is the resistance in your ammeter? Use the equation V=IR to calculate the current. I.e. the current is 120 volts divided by the resistance.
If you want to use your car's amplifier and subwoofers on your home stereo or computer how can you plug either a 300W amp or a 1200W amp to a 120V house outlet?
You can't plug a car amplifier into a 120V house outlet. You must first convert 120V AC to 12V DC, then plug your car amplifier into the 12V DC. It has been state…d that: "The best thing you can do is plug all your car's equipment into your home's "12v" outlet. The result will be all your equipment will be destroyed immediatly and the populace will not have to listen to what you call "music". Maybe after the fire your Parents might care enough to monitor your computer usage. Now on a personal note, do what you can do well. If you don't know the basics about electricity, (Yes I am yelling!) DON'T GET NEAR IT!...pkazsr" Although colorful, this may not be the answer you were looking for. Assuming you meant "120v outlet" There are many companies that make 12v "adapters" that will plug into your 120 volts AC (or even 240 vac) and convert it to 12 volts DC such as may be used by car stereo equipment. You just need to make sure you get one (or more) that has sufficient capacity (in watts) to operate, say, 20 percent more than the rated output of your equipment. In other words, if you have a 1000 watt amplifier, you should use a 1200 watt converter. This will permit the equipment to operate more efficiently, at a cooler, safer temperature than if you try to save a few dollars by buying a unit that is barely big enough. Disconnect the converters from 120v when not in use. Rock on! on side note if you have small AC to DC converter lieing around DO NOT USE IT !!! these can get hot if to much watts are trying to be pulled out of it and plastic does cach on fire DO NOT TRY THIS Step 1: take amplifier to pawn shop. Step 2: trade amplifier for a home-stereo integrated amp. This will probably require some money. Step 3: use that to drive the sub. Yes, it will work. This will work better, and for less money, than trying to use a power supply to operate the car stereo amp. but if you must have your car stereo you can get AC to DC converters big enoth to power your amp and stereo at this link ROCK ON !!!!!!! http://www.carparts.com/PYRAMID-110-VOLT-AC-TO-12-VOLT-DC-POWER-CONVERTERS/GP_2001690_N_111+10718+600022513_10618.car Buy a heavy duty marine deep cycle battery and hook your amp up, and then buy a battery charger to charge it overnight. I have an 800w installed with my comp. boom box and everything. Answer I have made a home stereo out of car audio equipment before. I wanted to because of the sound quality in car audio. I have gone over the other answers in this page and have yet to see anyone that stated they know anything about electricity say anything about the Amps needed to properly run car audio equipment. Ever take notice that in your automobile you require a 30 - 35 Amp fuse and in some cases multiple fuses. If you don't have the sificient amperage in your converter your sub will crap out as soon as it starts to sound good, mind you if you don't want to add a sub ( and Actually enjoy your music ) then you wont need much in the amperage side. If you are not running anything but a deck then a low budget 12 converter will do the job. to get an inverter with sificient amperage to run amps, subwoofers, eq's and such, it will run you around $700.00 - $1,000.00 just for the converter alone. Trust me I have done it. The sound is like none other and the fine's for the noise complaints are great. Hahahahaha. I havent turned my system on in years as I get a fine everytime. But it was fun at the time. Best sound ever.
Alternating Current (AC), which means it changes from positive to negative at a frequency of 50 or 60 cycles per second. In USA, Canada and other countries which use simi…lar standards for mains electricity supply, the voltage coming into the house is usually an average of 240 Volts AC. This is split into two, with a common neutral wire, so that 120 Volts AC is the voltage supplied from most ordinary socket outlets. Some high powered appliances, such as kitchen stoves or ranges, water heaters and dryers, run at the full 240 Volts. In Europe and many other countries the alternating current changes from positive to negative at a frequency of 50 cycles per second. The voltage coming into the house is usually an average of 230 Volts AC and that is what is supplied from most ordinary socket outlets. As in the US system, high powered appliances, such as kitchen stoves or ranges, water heaters and dryers, also run at 230 Volts.
I know that it may be electrical current. yep it is thx i got a 96 on my test :) k.m
A: measuring the wall outlet will tell the potential in volts available but not the power capability. If a load is applied then that voltage shell tell you the wall outlet cap…ability under load B: mostly correct, the measurement of the outlet under load of an item plugged in will tell you the load drawn by that item, but not the load capacity of the outlet, that is found in you power box by what level fuse is in that circuit and what else is running on that same circuit. most outlets have a 10 amp rating, some have 15 amps some have 20 amps, though most appliances do not draw more than 10 amps anyway.
Won't it be the Wattmeter, for 1W = 1Joule/second? The domestic electricity meter is a kW/hr meter.
Canada and the United States (along with most of the rest of North America and some of South America) use a connector standardized by the National Electrical Manufacturers… Association. The outlets feature two slotted inputs for the electrical current and one hole for the ground.
Can you use an oscilloscope to measure the 110 volts AC in a home wall outlet if so how is it done safely to avoid damage to the oscilloscope?
The first thing to consider in measuring the line voltage of a home wall outlet is the oscilloscope probe voltage rating. Most high-impedance probes have a resistance of one M…egohm of greater and will withstand peak voltages in excess of 200 Volts, but it pays to make sure that you do not damage the resistor within the probe. The next item of concern is the current flowing in the power line ground. If you have a ground current protected outlet, then it will be safe from dangerous ground currents. It will also limit the voltage errors produced by any circulating ground currents. As is the case for many instruments, the metal case is generally tied to the line common through a small capacitor, so the ground current can produce a small voltage between the case and line common. That is the purpose of using a line current interrupter for protection. Do NOT connect the oscilloscope ground lead to the line socket. If you connect it to the wrong pin, then the case can be at a high enough voltage to cause shock. Better to be on the safe side. Keep in mind that the voltage is rating in RMS (root-mean-square) volts and not peak or average volts. Therefore, the sine wave peak is 1.414 (square root of 2) times the RMS voltage. Conversely, the RMS voltage the peak voltage divided by 1.414.
A: all computers are created equal the difference is the applications. It will be unproductive to have games in a business computer or to have limited memory
Probably a regular energy meter that is meant for you to use in your house.
feet is probably more accurate
You measure a house fly in millimeters
It depends how big your house is! Meters is normally best for us with modest size houses.
Using DC the problem can be electrolytic action in the material being tested that causes the reading to change with time. AC prevents that happening.