Definition

• Power is the rate at which work is done. That means if you do a certain amount of work (like lifting weights or moving bricks) in a shorter amount of time, your power is higher.

• If you do a work in a short amount of time, this means that your power is high. Example - while cycling if you pedal faster, it means your power is more

Key Points - To Boost Power

• Lifting a heavier object in the same amount of time.

• Lifting the same object but faster.

Formula Of Power

• Equation Of Power = Work Done/Time Taken

• P = W/T

• Power depends on the time you take to complete the work, if its more its less power but if the time taken is less than the power is high

Unit Of Power

• Watt is a unit of power, it measures how fast you complete your work or transfer energy

• One Watt = 1 Joule/Sec

• Scale -:

1 kilowatt (kW) = 1000 watts

1 megawatt (MW) = 1,000,000 watts

1 gigawatt (GW) = 1,000,000,000 watts

Power Efficiency

• Percentage Efficiency Of Power -: Useful Power Output / Power Input = ? x 100