Question

The SI unit of power is?

(a) kW(kilo-watt)

(b) J/s(joules per second)

(c) Ws(watt-second)

(d) J/h(joules per hour

I got this question in a national level competition.

I want to ask this question from Power in section Simple DC Networks of Basic Electrical Engineering

Answer 1

Correct option is (b) J/s(joules per second)

To elaborate: Power = energy/time

SI unit of power = SI unit of energy/SI unit of time = joule/second.