Advertisements
Advertisements
प्रश्न
How many joules are there in one kilowatt-hour?
How many joules are equal to 1 kW h?
Advertisements
उत्तर
There are 3.6 × 106 J in one kilowatt-hour.
संबंधित प्रश्न
Fill in the blank
Cooking gas converts _______ energy into heat energy.
Match the following columns
| COLUMN A | COLUMN B |
| 1. Running water | 1. heat energy |
| 2. Burning | 2. vibrations |
| 3.Energy | 3.atom bomb |
| 4.Sound energy | 4.kinetic energy |
| 5.Nuclear energy | 5.joule |
Select the correct alternatives
When a bulb lights up on passing current, the change of energy is
Select the correct alternatives
The correct statement is
Match the following:
| Column A | Column B |
| (a) Needle | (1) class II lever |
| (b) Doorknob | (2) inclined plane |
| (c) Ramp | (3) Class I lever |
| (d) Lemon crusher | (4) Wheel and axle |
| (e) Seesaw | (5) wedge |
Define the term efficiency of a machine.
Define the term 'watt'.
A cell converts one form of energy into another form. Name the two forms.
A certain household consumes 650 units of electricity in a month. How much is this electricity in joules?
The commercial unit of energy is :
If the energy of a ball falling from a height of 10 metres is reduced by 40%, how high will it rebound?
Observe the picture and put a tick (✓) if work is done and put a cross (x) if work is not done.
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
Which one of the following requires wind energy?
When a body falls freely towards the earth, then its total energy
Which one of the following is not the unit of energy?
The work done on an object does not depend upon the
Define kilowatt hour.






