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प्रश्न
State the energy changes in the following case while in use:
an electric toaster.
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उत्तर
Electrical energy into heat energy.
संबंधित प्रश्न
Explain how, geothermal energy is used to generate electricity.
State two advantages of geothermal energy.
Name the type of energy (kinetic or potential) possessed by the following:
Water flowing in a river.
Name the physical quantity measured in terms of horse power.
State the energy changes in the following case while in use:
an electric cell in a circuit
Obtain an expression for the potential energy of a body of mass m at a height h above the ground.
State the energy changes which take place when:
A bulb glows, when torchlight is switched on.
Give one example when:
Electric energy changes to sound energy.
A body of mass 50 kg has a momentum of 3000 kg−1 ms. Calculate:
(j) the kinetic energy of the body.
(ii) the velocity of the body.
Energy from various sources is considered to have been derived from the sun. Do you agree? Justify your answer.
