What is the power of a body which is doing work at the rate of one joule per second?

Academic Physics NCERT Class 9

When a body is doing work at the rate of one joule per second, then the power of the body is $1\ Watt$.

Tutorialspoint

Updated on: 10-Oct-2022

64 Views

.............. is defined as the rate of doing work:(a) Power(b) Energy (c) Current(d) Electric current
Which of the following statements correctly defines a volt?(a) a volt is a joule per ampere.(b) a volt is a joule per coulomb.
If work is done at a faster rate, then (a) power is more (b) No power is required to do work (c) power is less (d) Infinite power is required
Fill in the following blanks with suitable words:(a) Work is measured as a product of .................... and .................(b) The work done on a body moving in a circular path is .................(c) 1 joule is the work done when a force of one .............. moves an object through a distance of one............ in the direction of .....................(d) The ability of a body to do work is called ..................... The ability of a body to do work because of its motion is called................(e) The sum of the potential and kinetic energies of a body is called ............... energy.
The sound from a mosquito is produced when it vibrates its wings at an average rate of 500 vibrations per second. What is the time period of the vibration?
If work is done at a faster rate, thenpower is moreNo power is required to do workpower is lessInfinite power is required
A submarine left the surface of the water at the rate of $-6$ feet per second. At that rate, how long would it take the submarine to reach $-180$ feet level?
A man rowing a boat upstream is at rest with respect to the shore. Is he doing work ?
Power of a body is equal to:work /timework /time x workwork x timetime/work
Define 1 joule of work.
Time taken for 10 oscillations of a body is 20 second, then time period of the body is ?
From a tap of inner radius $0.75\ cm$, water flows at the rate of $7\ m$ per second. Find the volume in litres of water delivered by the pipe in one hour.
A room is 11 metres long and 9 metres wide. What is the cost of carpeting the floor at the rate of rupees 110 per square metre?
Fill in the following blanks with suitable words:(a) Power is the rate of doing .....................(b) 1 watt is a rate of working of one ................. per ..............(c) The electricity meter installed in our home measures electric energy in the units of ................(d) The principle of ..................... of energy says that energy can be...............from one form to another, but it cannot be....................or..................(e) When a ball is thrown upwards,............... energy is transformed into.................energy.
Which one of the following is not the unit of energy?$(a)$. joule$(b)$. newton metre$(c)$. kilowatt$(d)$. kilowatt hour

Kickstart Your Career

Get certified by completing the course

Get Started

Advertisements