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How do you convert a 200 micro-amp DC meter to a 10 volt DC voltmeter?
Wiki User
∙ 13y ago
Start by using Ohm's law. 10 volts and 200 microamps requires 50,000 ohms. From that, subtract the impedance of the meter. Place the final resistor in series with the meter.
Add a resistor in series of such a size that when there is 10v it will allow 200 u amps to flow.
Wiki User
∙ 13y ago
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When was the Volt Meter invented?
Voltmeters were made possible by an 1819 discovery by Hans Oersted. The first voltmeter were made soon after that.
How is a voltmeter wired in with the load?
An inline volt meter is designed to have the voltage pass through it. The wire has to be cut or otherwise disconnected, and the meter installed between the disconnected ends of the wiring.
Why thermocouple voltmeter is connected across shunt resistance and electronic voltmeter across capacitor?
There is no such a thing as a thermocouple volt meter. A analogue or digital millivolt meter or volt meter is connected across a shunt or parallel with the shunt to measure the current through the resistor. Say the resistor value = 1 Ohm, then by using the Ohm law formula to calculate the current, say the voltage (voltage drop), read on the volt meter is 1.5 Volt that is R*V = A that is, 1Ω*1.5V = 1.5 Amp. Any type of DC volt meter, analogue or digital can be used to measure the voltage across a capacitor if the value of the capacitor is large enough that reading will be true RMS. as long as the supply current (EMF Power) are larger than the load current.
What measuring instrument is used to measure potential difference?
To Measure Voltage or potential difference you can use volt meter, there are diferent methode to measure DC voltage and AC Voltage.use a AVO meter and you can choose Voltage in each voltage range on the selector.a Volt meter instrument you can find it by manual methode and digital .Dont forget to read manual book before you will measure the voltage.Comment'Potential difference' is exactly the same thing as 'voltage'; they are synonymous.
When a voltmeter is connected to a resistor what will it read?
If you place an OHM meter across a resistor, it will read resistance. An OHM meter set to read voltage will read any voltage present. So, if you pick up a resistor, connect it to a volt meter, in theory, no voltage will be present. Unless you're feeding some sort of electricity through it. I'm certainly not an electrical engineer, I do however use a volt/ohm meter occasionally. A volt/ohm meter is a dual/multi purpose piece of equipment.
How many voltmeter and ammeter are in dc watt meter?
There is no volt meter or amp meter in a DC watt meter.
Voltmeter is used for?
A volt meter is use to measure the voltage of the circuit.
What is the difference between milli volt meter and volt meter?
A milli voltmeter is suitable for measuring voltage/potential difference in milli volts, thus they measure smaller voltages. A regular voltmeter is used to measure comparatively larger voltages.
What resistance value is add to convert a galvanometer into a voltmeter?
It depends on the resistance of the galvanometer and the current required to reach full scale. A 100 ohm meter requiring 1 milliampere would require 99.9 KOhms in series to become a 100 volt voltmeter.
A DC voltmeter has a resistance of 20000 ohms per volt What is the resistance of the meter if the range selection switch is set on the 250 volt range?
5 megohms
When was the Volt Meter invented?
Voltmeters were made possible by an 1819 discovery by Hans Oersted. The first voltmeter were made soon after that.
Why volt meter are attached parallel to the circuit?
Because nothing has to pass through the meter. The voltmeter is only measuring the DIFFERENCE in electric potential between two points.
Why potentiometer is more accurate than voltmeter?
volt meter draws current from the device whose reading is to be taken and potentiometer does not draw current from the device so it is better to use potentiometer than voltmeter
How is 110 volts and 220 volts measured?
With a voltmeter Keep volt meter terminal on phase and neutral wire and it will show the exact volatage
How do you use a volt meter to test the heater on a spa?
Turn on the voltmeter and attach a probe to different terminals on each component for a reading. What you do with the results is up to you if you are a heater tech. If you do not know how to use a voltmeter - you are already in trouble.
What should you do to convert a galvano meter into volto meter?
Connect a large but precisely known resistance in series with the galvanometer. For example, if you connect a 1-Megohm resistor in series with it, then the galvanometer will indicate 1 microampere of current when it's connected across a potential difference of 1 volt ... quite a sensitve voltmeter.
How is a voltmeter wired in with the load?
An inline volt meter is designed to have the voltage pass through it. The wire has to be cut or otherwise disconnected, and the meter installed between the disconnected ends of the wiring.
