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प्रश्न
State the energy changes in the following case while in use:
an electric bulb
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उत्तर
Electrical energy into light energy
संबंधित प्रश्न
State the energy change in the following device while in use:
A loudspeaker
What name is given to the heat energy obtained from hot rocks inside the earth?
Write true or false of the following statement.
There is always some loss of energy in conversion from one form of energy to another form, so the total energy is not conserved.
Give one relevant example for the following transformation of energy :
Chemical energy to light energy.
What is meant by the renewable and non-renewable sources of energy? Distinguish between them giving two examples of weach.
Select the renewable and non-renewable sources of energy from the following:
Coal
Give three examples of bodies possessing potential energy.
State two advantages and disadvantages of using wind energy for producing electricity.
State the energy changes which take place when:
A toy car spring is wound and car is made to run on level floor.
Give one example when:
Kinetic energy changes to heat energy.
