To delve into the common units of a voltmeter, the three primary units are:
1. **Volts (V)**: The standard unit for measuring electrical potential difference.
2. **Millivolts (mV)**: One thousandth of a volt, often used for small voltage measurements.
3. **Kilovolts (kV)**: One thousand volts, typically used in high-voltage applications.
These units help provide a clear understanding of electrical potential in various contexts. If you need more details about how these units are applied, let me know!