Advertisements
Advertisements
Question
How many joules are there in one kilowatt-hour?
Solution
There are 3.6 × 106 J in one kilowatt-hour.
APPEARS IN
RELATED QUESTIONS
A certain household has consumed 250 units of energy during a month. How much energy is this in joules?
Write true or false of the following statement.
A gum bottle lying on a table has no energy.
Write true or false of the following statement.
One form of energy cannot be converted into another form.
What is potential energy ? State its unit.
State two factors on which the potential energy of a body at a certain height above the ground depends.
A certain household consumes 650 units of electricity in a month. How much is this electricity in joules?
- Take two aluminium channels of different lengths.
- Place the lower ends of the channels on the floor and hold their upper ends at the same height.
- Now take two balls of the same size and weight and release them from the top end of the channels. They will roll down and cover the same distance.
- At the moment of releasing the balls, which energy do the balls have?
- As the balls roll down which energy is converted into which other form of energy?
- Why do the balls cover the same distance on rolling down?
Note: The question is wrong. It should be "Why do the balls cover the same distance after rolling down"? - What is the form of the eventual total energy of the balls?
- Which law related to energy does the above activity demonstrate? Explain.
The capacity that an object has for doing work is called ______.
Which one of the following is not the unit of energy?
The work done on an object does not depend upon the