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प्रश्न
State the energy changes which take place when:
A battery lighting up a bulb.
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उत्तर
The electrical energy changes into heat energy and light energy.
संबंधित प्रश्न
Give one example to show the conversion of potential energy to kinetic energy when put in use.
Name the type of energy (kinetic energy K or potential energy U) possessed in the given cases:
A moving bus
Name the type of energy (kinetic energy K or potential energy U) possessed in the given case:
A stretched wire
What is hydro energy?
What kind of energy is possessed in a situation when?
A cocked up spring of air gun.
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:
Potential energy changes to electric energy.
A moving body weighing 400 N possesses 500 J of kinetic energy. Calculate the velocity with which the body is moving. (g = 10 ms2)
In a hydroelectric power station, 1000 kg of water is allowed to drop through a height of 100 m in 1 sec. If the conversion of potential energy to electric energy is 60%. Calculate the power output. [Take: g = 10m/sec2]
What ts the original source of energy for the electricity produced at a thermal power station?
