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प्रश्न
Give one example when:
Mechanical energy changes to electric energy.
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उत्तर
In an electric generator, the mechanical energy changes to electric energy.
संबंधित प्रश्न
What is the source of heat contained in geothermal energy?
Define the term kinetic energy. Give one example of a body which possesses kinetic energy.
A boy of mass m climbs up a staircase of vertical height h.
(a) What is the work done by the boy against the force of gravity?
(b) What would have been the work done if he uses a lift in climbing the same vertical height?
State the energy transformation on the following:
Electricity is obtained from nuclear energy.
Name the energy changes for each of the following cases:
dynamo
A body of mass 5 kg falls from a height of 10 m to 4 m. Calculate:
The total energy possessed by the body at any instant? (Take g = 10 ms-2).
Give three examples of bodies possessing potential energy.
How much hydro-electric power is generated in India?
State two advantages and disadvantages of using nuclear energy for producing electricity.
Use your brain power!
Why do tablets of camphor decrease in size day by day?
