The Ammeter XD
A voltmeter.
Since voltage is electrical potential difference, to measure the voltage across a component, you place the voltmeter across, or in parallel with, the component.
voltmeter
voltmeter
It is a voltmeter which can only measure direct current.
A voltmeter measures voltage in volts.
To measure the voltage across a component in an electrical circuit, a voltmeter can be connected in series by placing the voltmeter in the same path as the component. This allows the voltmeter to measure the voltage drop across the component accurately.
An electrodynamometer can work as a voltmeter by judging the wavelength and force of the electricity, much the same at the voltmeter, then converting it to a force that is more recognizable.
By using a voltmeter.
Use a voltmeter.
voltmeter
by voltmeter
The Ammeter XD
a voltmeter is used to measure voltage
To measure electrical voltage accurately using a voltmeter, first ensure the voltmeter is set to the appropriate voltage range. Connect the voltmeter in parallel to the circuit or component you want to measure. Take note of the polarity and read the voltage displayed on the voltmeter. Make sure to account for any decimal points or units displayed.
To measure the total emf simply connect the battery and voltmeter with the right terminals , but to measure the terminal potential difference which is less than the emf the voltmeter is connected in parallel with the battery