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Sure. You go to Radio Shack or Home Depot or any electronics dealer or go online and you get yourself a digital multimeter for about 15 bucks. That will give you voltage for sure, but it will only give you current up to a few hundred milliamps. If you want to measure serious current, like how much current your electric clothes dryer is pulling you need a specialized clamp meter. But, if you didn't know the answer to the question, you should buy a new one because it will come with instructions, which you will undoubtedly need.
Phil
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∙ 16y ago
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What is a current-carrying wire?
A wire with some resistance and a voltage applied to it The amount of current I passing this wire is V/R
In 3 phase voltage increases and current decreases why?
If the load current descrease, there is less voltage drop caused by the resistance of the wire, so the voltage is higher.
Why electric current across a wire drops?
Electric current does not drop. Electric voltage, however, drops across a wire because the wire has non-zero resistance. (Do not confuse electric current with electric voltage - they are not the same.)The reason current does not drop is that, in a series circuit, according to Kirchoff's current law, the current at every point in a series circuit is the same.
What is the effect on the current in a wire if both the voltage across it and it's resistance are doubled?
By Ohm's Law, current is voltage divided by resistance, so if you double both the voltage and the resistance, the current would remain the same.
How many things are needed to create a current?
A difference of potential (voltage) and a conductor connected to the voltage source will cause current flow. Not that you'd want to "short out" a voltage source with a piece of wire, but just the source of voltage and the conductor would permit current to flow. If you took a piece of wire and touched it to the terminals of a good battery, current would flow. It takes just those two things to create a current.
How does a voltage tester work?
A voltage tester is a popular tool with electricians. A voltage tester determines if there is a current running through a wire and determines if the current needs grounding.
How to check for an ungrounded wire?
You can use a wire tester to check for a ungrounded wire. Attached the wire tester to the battery posts. The tester will show you if the ground is weak or strong.
How do electrical testers work?
An electrical tester is tool used to check if a wire is producing an electrical current. Usually you will just hold it to the end of a wire, if an electrical current is being "induced" a light will glow on the tester, this is a live wire.
How can you check if you have 240 volts on a 30 amp two pole breaker?
A simple voltage tester. Just check both sides of the breaker where the wire comes in
What is the difference and how to differentiate between neutral and hot wires if both wires have the same color?
If the electrical box is grounded, check with a tester, the "hot" wire will have a voltage to the the grounded box the neutral wire will not. If the box is not grounded, with the breaker supplying the voltage turned off, use a tester on the resistance scale to check for continuity between the wires and a cold water pipe or some other grounded medium. The neutral will have continuity between the wire and a ground the "hot" wire will not.
Is the tester can check DC in a wire?
DONT ASK FOOLISH QUSTIONS
Moving a magnet in and out of a coil of wire produces?
That will induce a voltage across the wire.
How do you use a knopp k60 voltage tester?
The device is used to detect the presence or absence of voltage prior to working on a circuit. The red test probe is placed in contact with the "hot" wire and the black probe is placed in contact with the ground wire. If there is current, the neon bulb will glow and a solenoid will "buzz". The K-60 identifies both AC and DC current.
How do I wire my amp so that it won't drain my battery?
Get a voltage tester with a point that you can pierce wires with and find a hot wire that is only hot when the key is on and wire the amp to that.
Why would you not get an electric current if you hold a piece of wire in your hands?
Because there is no potential difference (voltage) between your hands. You can observe that easily if you have a voltmeter: Hold one probe in each hand, and read the voltage between your hands. The current in the wire is (voltage between the ends of the wire) divided by (resistance of the wire). If voltage=0, then current=0.
How do you troubleshoot a head light problem?
Check wiring on back of lights, exchange globes with someone who has same car, check fuses(they should be labelled), check voltage after the headlight switch with inexpensive multimeter. Use voltage tester with sharp probe to test voltages on the wires to see if power is getting to the lights and if not follow the wire back until you find voltage.
What is a current-carrying wire?
A wire with some resistance and a voltage applied to it The amount of current I passing this wire is V/R
