Advertisements
Advertisements
प्रश्न
Define kilowatt hour.
Advertisements
उत्तर
Kilowatt hour is the unit of work.
Since, power × time = work
APPEARS IN
संबंधित प्रश्न
Write true or false of the following statement.
In an electric fan, electrical energy changes into the mechanical energy.
State the unit of energy and define it.
State two factors on which the potential energy of a body at a certain height above the ground depends.
What do you mean by conservation of mechanical energy? State the condition when does it hold.
Name the quantity whose unit is :
(a) kilowatt
(b) kilowatt-hour
If the energy of a ball falling from a height of 10 metres is reduced by 40%, how high will it rebound?
We make useful objects from a variety of substances. Another use of substances is that we get energy from some of them.
There is a car. Its tank is full of fuel but it does not move. Why is that?
Observe the picture and put a tick (✓) if work is done and put a cross (x) if work is not done.
 |
 |
 |
 |
 |
 |
Write the type of energy.
What energy transfer happen in a car engine?
