Voltage Difference Is Measured In
The water analogy still applies.
Voltage difference is measured in. The higher the voltage potential difference the greater the attraction of electrons and greater the current flow. Electrical power is measured in watts. The voltmeter can measure the dc voltage of a battery for example typically 1 5v or 9v or the ac voltage from the power socket on the wall typically 120v. Voltage along with electric pressure electric tension and electrical potential difference is measured in units of electric potential.
The quantity measured by a voltmeter is the negative of the difference of the electrochemical potential of electrons fermi level divided by the electron charge and commonly referred to as the voltage difference while the pure unadjusted electrostatic potential not measurable with a voltmeter is sometimes called galvani potential. In an electrical system power p is equal to the voltage multiplied by the current. For more complex signals an oscilloscope can be used the measured the dc and or ac voltage for example to measure the voltage across a speaker. In essence the voltage is the electrical pressure and it is measured in volts which can be represented by the letter v.