(What is the tool called?)
(What can the tool
measure?
![What Is The Tool CalledWhat Can The Toolmeasure class=](https://ph-static.z-dn.net/files/d82/36586b696a24128a4614ae4b2d8abca5.jpg)
Answer:
voltmeter,instrument that measures voltages of either direct or alternating electric current on a scale usually graduated in volts, millivolts (0.001 volt), or kilovolts (1,000 volts). ... The potentiometer operates by comparing the voltage to be measured with known voltage; it is used to measure very low voltages.
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