Voltage
Quick Facts
- Voltage (
V) describes the quantity of electromagnetic force in which charge carriers are being pushed in an electric current. - Voltage is always a relative measurement between two points.
Intro
Voltage, measured in volts (V), is the amount of force in which charge carriers are being moved in an electric current.
Common Source Voltages
| Source | Voltage |
|---|---|
| High power transmission lines | 230kV - 500kV |
| North American Household Mains | ~117V (110 nominal) |
| European Household Mains | ~220V (230 nominal) |
| AA Battery | 1.5V |
| USB Power | 5V |
| Netduino Digital IO | 3.3V |
| Low-power Peripherals | 1.8V |
Common Unit Magnitudes
| Magnitude | Value in volts |
|---|---|
| microvolt (µV) | 0.000001V |
| millivolt (mV) | 0.001V |
| volt (V) | 1.0V |
| kilovolt (kV) | 1,000V |
| megavolt (MV) | 1,000,000V |
Further Reading
For a much more in depth discussion regarding amps, see the Amount and Force section in part 2 of the Electronics Tutorial