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प्रश्न
Fill in the blank
An electric fan converts electrical energy into ______ energy.
रिक्त स्थान भरें
उत्तर
An electric fan converts electrical energy into mechanical energy.
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संबंधित प्रश्न
Write true or false of the following statement.
Potential energy changes into kinetic energy when it is put to use
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The ability to do work is called ______
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| 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 |
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What is potential energy ? State its unit.
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(a) kilowatt
(b) kilowatt-hour
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Study the following activity and answer the questions.
- 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.
Questions -
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- As the balls roll down which energy is converted into which other form of energy?
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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.
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