Which of the following is the correct SI unit of power?
AJoule
BNewton-metre
CWattCORRECT
DJoule-second
GCEPhysicsWork, Energy and Power2022
AI
Toaster Teacher
Why the answer is C, and why the others tempt you.
Power is defined as the rate of doing work or the rate of energy transfer. Its SI unit is the Watt (W), which is equivalent to one Joule per second (J/s). Joule is the unit of energy, Newton-metre is equivalent to Joule (unit of work), and Joule-second is the unit of angular momentum.
Want this in Pidgin, Yoruba, Igbo or Hausa? Sign up free →
Practice more Physics questions
GCE Physics has thousands more questions like this — with Worked answers on every one.