Which device is commonly used to measure voltage in a circuit with a digital display?
Digital voltmeter
Electrical measuring instruments are named after the quantity each one is built to measure, and the correct choice always matches the instrument's name to the quantity wanted.
The quantity to be read here is voltage (potential difference) on a digital, numerical display.
The instrument that measures voltage is the voltmeter, and in its digital form it is the digital voltmeter, which shows the reading as a number rather than a needle deflection.
It is connected in parallel across the two points whose potential difference is wanted and presents a very high internal resistance so it draws almost no current from the circuit.
A digital ohmmeter measures resistance in ohms and needs the circuit de-energised, so it is not used to read live voltage.
A digital ammeter measures current and is connected in series, while a digital wattmeter measures power; neither of these reads voltage directly.
Hence, the answer is Digital voltmeter.
Similar Questions
A voltmeter is connected across an open switch in a DC circuit. One side of the switch is connected to the supply voltage, while the other side is connected to the opposite terminal of the supply through a load. Assuming an ideal voltmeter and no current flow, what voltage will the meter read?
Before measuring current with an analog multimeter, how should the meter be connected in a circuit?
An industrial electrician uses an insulation resistance tester on a three-core cable. The measured resistance between core and earth is 900 megaohms. What does this value indicate about the cable's insulation condition?
Which part of a wattmeter connects in parallel with the load to measure voltage?
Which function is performed by turning the selector switch on a digital multimeter?
When testing a three-phase motor feeder, the insulation resistance readings between phase conductors are as follows: L1-L2: 60 MΩ, L2-L3: 58 MΩ, L1-L3: 61 MΩ. What does this indicate about the wiring?
Which of the following is not true with respect to the ammeter & voltmeter?
How many wattmeter elements are needed at minimum to measure the power of a 3-phase circuit?
Which of the following devices is used for measuring the speed of DC machines?
Controlling Torque in megger is provided by:
Important Questions from Measuring Instruments
An instrument called the ______ measures the electric current in a circuit.
Which of the following instruments is used to detect and record earthquakes?
An instrument called ______ measures the electric potential difference in a circuit.
A sphygmomanometer is used to measure which of the following?
Which of the following scientific instruments is used to measure atmospheric pressure?
