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प्रश्न
State the energy changes which take place when:
Water stored in dams rotates turbine connected to a dynamo.
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उत्तर
The potential energy of stored water changes to kinetic energy of flowing water, The kinetic energy of the flowing water rotates turbine. The turbine, in turn, rotates the coil of the generator and changes into electric energy.
संबंधित प्रश्न
Write true or false of the following statement.
The energy of flowing water can be converted into electric energy (electricity).
Define the term kinetic energy. Give one example of a body which possesses kinetic energy.
Give one relevant example for the following transformations of energy:
Chemical energy to heat energy.
State the energy changes in the following case while in use:
an electric toaster.
Renewable source of energy is:
A metal ball of mass 2kg is allowed to fall freely from rest from a height of 5m above the ground.
What the kinetic energy of the ball just before it hits the ground ?
State the energy changes which take place when:
Photographic film is exposed to sunlight.
Give one example when:
Electric energy changes to potential energy.
Give one example when:
Mechanical energy to heat energy.
