What do you understand by power , and it's formula and unit?
Answers
Answer:
Explanation:
Power is always dependent on work done, so if a person does work at different rates his power also differs at different times. This is where the concept of average-power comes into the picture.
What is Power?
We can define power as the rate of doing work, it is the work done in unit time. The SI unit of power is Watt (W) which is joules per second (J/s). Sometimes the power of motor vehicles and other machines are given in terms of Horsepower (hp), which is approximately equal to 745.7 watts.
What is Average Power?
We can define average power as the total energy consumed divided by the total time taken. In simple language, we can say that average power is the average amount of work done or energy converted per unit of time.
Power Formula
Power is defined as the rate at which work is done upon an object. Power is a time-based quantity. which is related to how fast a job is done. The formula for power is mentioned below.
Power = Work / time
P = W / t
Unit of Power
The unit for standard metric work is the Joule and the standard metric unit for time is the second, so the standard metric unit for power is a Joule / second, defined as a Watt and abbreviated W.
Answer:
In physics, power is the rate of doing work or of transferring heat, i.e. the amount of energy transferred or converted per unit time. In the International System of Units, the unit of power is the watt, equal to one joule per second.
P=W/T
IT'S SI UNIT IS WATT