Watt (W) — Science definition

The SI unit of power; one watt is one joule per second (1 W = 1 J/s).

Where it is taught

• Work & Power — Work, Energy & Momentum, Physics & Environmental Science, Grade 12

Taught alongside

• work
• joule (J)
• work-energy theorem
• power

Elsewhere

• All science terms
• All courses and reading

Browse all courses