English

Is Power a Scalar Or a Vector Quantity? - Physics

Advertisements
Advertisements

Question

Is power a scalar or a vector quantity?

One Line Answer

Solution

Power is a scalar quantity.

shaalaa.com
  Is there an error in this question or solution?
Chapter 1: Force, Work, Power and Energy - Short Answers

APPEARS IN

ICSE Physics [English] Class 10
Chapter 1 Force, Work, Power and Energy
Short Answers | Q 49.2

RELATED QUESTIONS

Power spent by a body depends on the time for which it does work.


The energy of a body is its capacity to do .........


Define the term energy.


Define 1 joule of energy.


When is work said to be done by a force?


Fill in the blank with suitable word :
Work is measured as a product of __________ and __________


P, Q and R are three forces which act as shown in fig.

The point O lies in the same plane. Given, P = Q = R = 10N

(i) Which force has the least moment about O? Give a reason.

(ii)Which force has the greatest moment about O? Give a reason.


What are the quantities on which the work done depends?

When you move upstairs, do you perform some work?


Give an example of a body possessing no K.E.

Name the physical quantity associated with the 'rate of doing work'.


A block of iron of mass 400 kg is used as a pile driver. If it is raised to a height of 20 meters, calculate the potential energy possessed by the iron block. (Assume g= 10 ms-2).

State the energy changes which take place when An electric bulb glows when it is connected to a source of electric current.


State the energy changes which take place when A stone dropped from the top of a cliff reaches the ground after some time.


Define Translational motion.


What should be the characteristic of a source of energy?


________ is said to be done when a force is acting on it.


Look at the activity below. Reason out whether or not work is done in the light of your understanding of the term ‘work’.

A wind-mill is lifting water from a well.


Look at the activity below. Reason out whether or not work is done in the light of your understanding of the term ‘work’.

A green plant is carrying out photosynthesis.


A car is accelerated on a levelled road and attains a velocity 4 times of its initial velocity. In this process the potential energy of the car


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×