Volt-amperes are watts... watts/second are joules
https://en.wikipedia.org/wiki/Watt
You got it backwards, Watts are Joules/second (or joules are Watt•second).
Watts * seconds are joules. Joules is a unit of energy. Watts are power.
You got it backwards, Watts are Joules/second (or joules are Watt•second).