If this causes the voltmeter pointer to return to the "0" line, the starting switch is defective.
In fact, a voltmeter is an ammeter which has had its shunt removed or disconnected.
He invented an ammeter, voltmeter, &c., in conjunction with Professor Perry.
Hence a voltmeter must be placed across a circuit and not in it.
The hydrogen electrode is connected with the negative post of the voltmeter, the oxygen electrode with the positive post.
What would happen if a voltmeter were put in series in a line?
Having assured yourself that the mechanical details are all right, now look at the voltmeter.
This reading is taken from the voltmeter supplied with the plant.
This test may be made by using a voltmeter instead of lamps, as shown in Fig. 221.
Now connect a voltmeter to the two ends of the coil as shown in the figure.
An instrument used for measuring the difference in voltage between two points in an electric circuit. Voltmeters typically make use of an ammeter that measures current flow across a known resistance inside the voltmeter; direct-current voltages can then be determined by Ohm's law. Digital voltmeters employ A/D converters to provide the numerical value of the voltage displayed. Compare ohmmeter.