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What is the assembly upstream and downstream in voltage and ammeter?
Wiki User
∙ 15y ago
assembly upstream and downstream in ammetres
Wiki User
∙ 15y ago
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How do you measure voltage using a ammeter?
An ammeter measures amperage not voltage.
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 does an ammeter work?
An ammeter is a low voltage voltmeter in parallel with a small resistance resistor. Current flow through the resistor creates a voltage drop across it which is then measured by the voltmeter.
Why placing the ammeter between the potential divider and the voltmeter will give an incorrect value?
beacause ammeter is use to measure the current not to measure the voltage
Why should you be the internal resistance of the very few Amitr?
ammeter connect in series in circuit to measure the current, if the Ammeter have a high resistance it would effect the voltage value because there will be a drop voltage over the internal resistance of the Ammeter, so we desgin the ammeters with very low resistance...
What is the difference between upstream and downstream in electrical network?
Generally upstream is closer to the positive (+) voltage source. In the case of an NPN transistor upstream of the transistor is the part of the circuit from (+) to the NPN collector pin. Downstream of the transistor is from the NPN emitter pin to the ground / sink / negative (-) terminal.
How do you measure voltage using a ammeter?
An ammeter measures amperage not voltage.
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!
What is the effect caused by ammeter resistance when an ammeter is inserted into a circuit to measure the current?
The effect the multimeter might have on the circuit when inserted to measure the current is to increase the circuit resistance and decrease the available voltage to the circuit. This is because the multimeter in amps or milliamps mode does have a small resistance which is not zero, so by Ohm's law, there is a voltage drop across the multimeter; small, but not zero. Usually this effect is small. One way to compensate is to start by measuring voltage, and then inserting a separate ammeter and adjusting the power supply to match the original voltage. Of course, the voltmeter must be downstream of the ammeter.
How can you say that ammeter measures current and voltmeter measures voltage?
voltmeter in parallel and ammeter in series of a circuit.
How does an ammeter work?
An ammeter is a low voltage voltmeter in parallel with a small resistance resistor. Current flow through the resistor creates a voltage drop across it which is then measured by the voltmeter.
Why placing the ammeter between the potential divider and the voltmeter will give an incorrect value?
beacause ammeter is use to measure the current not to measure the voltage
How resistor are tested given a voltage source and ammeter?
I can think of the following characterisatics of a physical resistor that would beimportant to know in various circuit design situations:ResistancePower dissipation capabilityEquivalent parallel capacitanceEquivalent series inductanceI think it's accurate to say that Resistance is the only one that can be measuredwith a voltage source and ammeter.It would be necessary to know the voltage of the voltage source. Then proceedas follows:Connect the voltage source, resistor, and ammeter in series.Energize the voltage source.Read the ammeter.The resistor's resistance is (Voltage)/(Current, as indicated by the ammeter).
Why should you be the internal resistance of the very few Amitr?
ammeter connect in series in circuit to measure the current, if the Ammeter have a high resistance it would effect the voltage value because there will be a drop voltage over the internal resistance of the Ammeter, so we desgin the ammeters with very low resistance...
Which has higher resistance an ammeter or micro ammeter?
Micro ammeter has higher resistance. use ohm's law.. Say the voltage applied is 1 V. then for the ammeter.. I=1A, V=1V R=1 ohm for the micro ammeter.. I=0.000001, V=1V R=1000000 ohms
Why are the readings on a ammeter always different?
The readings on an ammeter indicate the current being drawn by a load in a circuit. This load is basically a resistance to current flow. The higher the resistance, the lower the current. The supply voltage has a direct effect on current flow. The higher the voltage applied, the higher the current will be. So the readings will vary on the ammeter according to fluctuations in load and or resistance of the circuit and the applied voltage.
Does a clamp-on ammeter measures voltage?
No, it will only measure the current through a single phase.
