Question

Power is expressed in ________?

A) Newtons
B) Joules per second
C) Meters per second
D) None of the above

Answer 1

(B) Joules per second

Step-by-step explanation:

Power is the amount of work done per unit of time. Since work is measured in Joules, the SI unit of power is Joules per second (J/s), or Watts (W).

Of course, the cooler unit of power is the Horsepower (hp), originally introduced by James Watt himself, using which people nowadays still boast about their favorite car's "strength."