0
What will happen if the voltmeter was inserted in place of an ammeter?
Wiki User
∙ 14y ago
You would load the circuit, and it is likely it would not operate correctly. A volt meter is designed to have a very high resistance between the two probes; an ammeter is designed to have a very low resistance.
For instance, say you have a 120 watt light bulb that runs on 120 volts (you would then draw ~1 amp of current). If you tried to measure this with a meter that has .1 ohm resistance on ammeter setting, and 1,000,000 ohms on volt meter:
Error due to loading:
ammeter: .1 / (120 + .1) = .08%; Current will be .999Amps, power to the light bulb will be 119.9 watts
Volt meter: 1,000,000/ (120 + 1,000,000) = 99.9%; current will be 120micro Amps, power to the light bulb will be 14.4 milliwatts (the light bulb will not appear to be on).
Wiki User
∙ 14y ago
Wiki User
∙ 13y agoThe ammeter would be destroyed by excessive current but nothing would happen to the voltmeter
Add your answer:
Earn +20 pts
What is internal resistance of battery?
The equivalent resistance you would have to place in series with an ideal battery (which of course does not exist) of the same voltage to get the same behavior (voltage drop with load) as the real battery has. It is a mathematical modeling technique to help in circuit analysis.
How will Vancouver and Vancouver island be effected by an earthquake?
It depends on where the earthquake takes place. If it takes place on Vancouver Island,then the effect would happen on Vancouver Island. If happens in Vancouver,then the effect would happen in Vancouver.
What about a remake of the pbs kids tv show the puzzle place?
that could happen
Does the entire action in the story footnote to youth happen in one place and time?
Rural Areas
What happen to vanilla in sugar sugar rune?
In the Manga she becomes the Queen, but in the Anime she gives the place of the Queen to Chocolat.
How is an ammeter converted to a voltmeter?
The ammeter is used in series, because you want to measure the current through a circuit. The voltmeter is used in parallel, because you want to measure the voltage across a circuit. If you were to place the voltmeter in series, no current would flow because of the relatively high impedance of the voltmeter. If you were to place the ammeter in parallel, you would create a short-circuit, due to the relatively low impedance of the ammeter.
Where ammeter and voltmeter are put in circuit?
Place in parallel anywhere in the circuit. One lead goes to the hot, the other to the neutral.
What happen when a ammeter is placed in parallel with the circuit?
If an ammeter is placed in parallel with a a load on a circuit, the circuit can short out as the ammeter takes the place of the load, flowing freely through the meter. Never measure across a resister or other electronic load with an ammeter. Remember, ammeters are used in series while voltmeters are used in parallel.
Why shouldn't ammeter be connected in parallel?
A: An ammeter actually is a voltmeter measuring the voltage drop across a very small shunt resistance. They can measure AC or DC, make sure the meter is rated for the anticipated current, and always connect in series.
What is the proper placement of an ammeter in a circuit?
Ammeter should be inserted in the place where we need to find the current. Care must be taken while inserting ammeter such that it is in series always. For example if we need to measure the current through any device, we have to connect the ammeter in series with tht device.
Why ammeter use fuses and volt meter do not?
An ammeter measures current THROUGH a circuit, a voltmeter measures current ACROSS a circuit. The ammeter is connected to a power source in series, essentially actually becoming part of the circuit. The current is flowing directly through the ammeter as if there were a wire in its place. If there is a surge from a substantial power source, the ammeter would be destroyed and the user could be severely injured. The fuse will "blow" if its "load" is exceeded breaking the circuit. A volt meter is connected to a power source in parallel because it has an extremely high resistance and little to no current would get through. You don't need a fuse because the current doesn't flow through it openly.
Why does an ammeter have a low resistance while a voltmeter has high resistance?
I am going to assume that you mean low "resistance" in an open circuit test and are performing this with a multimeter. An ammeter works by place a very small amount of resistance in series with a circuit and then measuring the Voltage drop across the resistance. The Voltage is directly proportional to the current as given in ohms law: E = I x R If you are measuring the resistance through the ammeter it will have a very low resistance and impedance.
How do you wire in a voltmeter?
A voltmeter needs to be connected in parallel with the part of the circuit you are checking. It records a change in voltage, and has a high internal resistance, so it cannot be connected in series unless you want to screw up the circuit. Set the meter to AC or DC volts and place the wires of the terminal across the resistor, switch, or any other potentially resistive part of the circuit.
Where is the best place to put an ammeter in the circuit to measure the current going through the light bulb?
Since (by Kirchoff's current law) the current in a series circuit is the same at every point in the series circuit, it does not matter where you place the ammeter.
When measuring current always place any type of meter in?
No. When measuring current, use an ammeter and place it in series in the circuit.
Why is a voltmeter not placed inside the circuit?
The voltmeter is connected parallel to the circuit in order to measure the voltage drop across that circuit or sub-circuit. If you were to connect the volmeter series to the circuit, since it is a high impedance device, it would represent an effective open-circuit condition. You would see the voltage available to the circuit, but the circuit would not receive its intended current and it would not function. Contrast this with the ammeter, which you do place series to the circuit in order to measure the current flow through the circuit.
How do you remove the crankshaft pulley on a Chrysler PT Cruiser?
With an special tool inserted in place of the bolt and a 3 jaw puller.With an special tool inserted in place of the bolt and a 3 jaw puller.
