Q. 34.2( 9 Votes )

Define power.

Class 9th Evergreen - Science 12. Work, Power and Energy

Answer :

Power is defined as the rate of doing work. For example: an old man takes 2 hour to do a work but a young man takes only 1 hour to do the same work, it means ‘rate of doing work’ by a young man is more than that of old man. So, young man has more power than the old man.

Rate this question :

How useful is this solution?

We strive to provide quality solutions. Please rate us to serve you better.

PREVIOUSDefine energy.NEXTWhat is kinetic energy?

Related Videos

Let's Calculate Workdone by a Body42 mins

Quiz | Lets Solve Numericals54 mins

Smart Revision | Let's Understand Power40 mins

Foundation | Let us Understand Law of Conservation of Energy44 mins

NCERT | Introduction to Work39 mins

NCERT | Energy and Its Type45 mins

Quiz | Lets Solve the Numericals57 mins

Rapid Fire Quiz53 mins

Lakhmir Singh | Work,Energy and Power (Part-1)40 mins

Smart Revision | Rapid Fire Round on Work, Energy and Power44 mins

Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts

Dedicated counsellor for each student

24X7 Doubt Resolution

Daily Report Card

Detailed Performance Evaluation

view all courses

RELATED QUESTIONS :

Define power. Give the SI unit of power.

Lakhmir Singh & Manjit Kaur - Physics

An electric motor raises a load of 0.2 kg, at a constant speed, through a vertical distance of 3.0 m in 2 s. If the acceleration power stations and thermal power stations, alternators produce electricity

A. 0.3 B. 1.2

C. 3.0 D. 6.0

Lakhmir Singh & Manjit Kaur - Physics

How many watts equal one horse power?

Lakhmir Singh & Manjit Kaur - Physics

Name two units of power bigger than watt.

Lakhmir Singh & Manjit Kaur - Physics

What is power? How do you differentiate kilowatt from kilowatt hour? The Jog Falls in Karnataka state are nearly 40 m high. 2000 tones of water falls from it in a minute. Calculate the equivalent power if all this energy can be utilized? (g = 10 m s^–2)

NCERT Science - Exemplar

(a) State and define SI unit of power.

(b) A person carrying 10 bricks each of mass 2.5 kg on his head moves to a height 20 m in the 50s. Calculate power spent in carrying bricks by the person (g = 10 m/s²)

Together with Science

Two bulbs of 40W each are lighted for eight hours daily. Find the cost of electrical energy consumed by them in one week at Rs. 3 per unit.

Together with Science

Write true or false for the following statements :

Work done by a force depends upon how fast work is done.

Evergreen - Science