Q. Where can you find a voltmeter in everyday life?

Answer

If the voltage is significantly different from 120 volts as measured by a voltmeter the wall outlet may be damaged. A voltmeter's second potential application is checking the state of a battery to see if it needs charging or replacing. A voltmeter can be used to measure electrical potential (volts millivolts (0.001 volts) or kilovolts)) in AC or DC circuits (1000 volts). The majority of modern voltmeters are digital and provide numerical readouts. Radiofrequency voltage can also be measured with dedicated voltmeters.