Watts is the SI unit of Power (P). Volts is the SI unit of potential difference and EMF.
- Volt is the measure of potential difference within two terminal of a conducting wire.
- Watt is the rate at which electrical work is performed when a current of one ampere flows across the potential difference of one volt.
One formula for watts is:
W = Volts × Current
The relation between watt and volt are proportionate. That is watt is directly proportional to volt. Which implies that-
- When the electric power in terms of watt increases, the electric potential in terms of volt also increases keeping electric current constant.
- When the electric power in terms of watt decreases, the electric potential in terms of volt also decreases keeping electric current constant.