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Ammeters must be connected in series with the load. When connecting in parallel the meter appears as a short. If you open the meter, there's usually an 850ma fuse, and/or a 2A and 10A fuse that you can replace and fix the meter.

Ohms, Volts, Inductance, Capacitance, Frequency, etc are all measured in Parallel, Only amps are measured in series. This is why there's always a separate "red" terminal for amps that you have to switch the lead to, so you know to connect it in series.

If you're trying to measure the ampacity of something, E.G. "How many amps does this power supply put out? You'll need to rig up a load in series with the meter, large variable resistors which are carbon piles are commonly used to test the condition of automotive batteries and vehicle charging systems (alternators).

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Reuben Corwin

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Q: Why Ammeter burns out when connected in parallel?
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Which circuit the ammeter connected in parallel?

An ammeter is always connected in series and a vlotmeter in parallel


Why wouldn't the shunt resistor in the ammeter protect the ammeter when the ammeter is connected in parallel?

Connecting an ammeter in parallel subjects that ammeter to the full supply voltage. The shunt resistor is not designed to sustain that value of voltage and will burn out. Also, the clue is in the word 'shunt' (which means 'in parallel') which means that the coil will also burn out!


How is ammeter and voltmeter attached to a circuit?

Ammeters are connected in series with the load under test. This requires the load be disconnected from the source, and the ammeter placed in circuit. Voltmeters are connected in parallel with the load under test. This does not require any circuit changes. Sorry, but WikiAnswers does not support illustrations.


Why do you have specific resistance combination inside a voltmeter and an ammeter Explain?

in voltmeter we have internal Resistance and connected in series , to current don't transfer in voltmeter , and we have internal resistance in ammeter and connected in parallel , to most current transfer through the ammeter.


Why in an ammeter low resistance is connected in parallel with the coil?

For protection.. Since the current prefer the short cut ..

Related questions

Which circuit the ammeter connected in parallel?

An ammeter is always connected in series and a vlotmeter in parallel


Why should ammeter still be connected in a series despite the fact that the bulbs are already connected in parallel?

Because the ammeter connected in parallel will act as a short circuit.


How should a ammeter and voltmeter be connected in circuit?

Ammeter is coneccted in series with circuit but Voltmeter is connected in parallel.


Is a ammeter connected in series or in parallel with the circuit under test?

An ammeter is connected in series. A voltmeter is connected in parallel. ammeter should always be connected in series instead of parallel becoz it is a low resistance device and we know that resistance is inversly proportional to current so more current will pass through it and if it is connected in parallel than it may get damaged


Why wouldn't the shunt resistor in the ammeter protect the ammeter when the ammeter is connected in parallel?

Connecting an ammeter in parallel subjects that ammeter to the full supply voltage. The shunt resistor is not designed to sustain that value of voltage and will burn out. Also, the clue is in the word 'shunt' (which means 'in parallel') which means that the coil will also burn out!


How shunt helps to extend the range of ammeter?

A shunt is connected in parallel with an ammeter. Any current applied to parallel devices will divide betwen them, so the ammeter will pass only a part of the total current.


How is ammeter and voltmeter attached to a circuit?

Ammeters are connected in series with the load under test. This requires the load be disconnected from the source, and the ammeter placed in circuit. Voltmeters are connected in parallel with the load under test. This does not require any circuit changes. Sorry, but WikiAnswers does not support illustrations.


How you convert galvanometer into ammeter in detail?

By attaching a resistance in parallel connection with the galvanometer. Or when a low resistor connected in parallel with galvanometer ,the galvanometer is converted in ammeter. and the resistor is called shunt resistance.


Why do you have specific resistance combination inside a voltmeter and an ammeter Explain?

in voltmeter we have internal Resistance and connected in series , to current don't transfer in voltmeter , and we have internal resistance in ammeter and connected in parallel , to most current transfer through the ammeter.


What will a ammeter indicates if it is connected in parallel?

Connecting an ammeter in parallel with a circuit element is hazardous. Because of its negligible resistance, it is equivalent to applying a short circuit across that element, and the resulting current through the ammeter may severely damage the instrument if it is not fused.


Why in an ammeter low resistance is connected in parallel with the coil?

For protection.. Since the current prefer the short cut ..


The rules of connecting voltmeter and ammeters in the circuit?

Connect ammeter in series and voltmeter in parallel to the circuit