Question

The SI unit of power is

• A. Watt
• B. Joule per second
• C. Watt-hour
• D. Kilowatt-hour

Answer 1

Answer: (A), (B)

The correct options are
A

Watt

B

Joule per second

Power is defined as the rate of doing work. Power $P=\frac{\text{Work}}{\text{Time}}$. The SI unit of work is Joule and that of time is second. So, the SI unit of power is Joule per second which is commonly referred to as Watt.