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प्रश्न
State two advantages of using wind energy for generating electricity.
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उत्तर
Advantages of using the wind energy:
1. It does not cause any kind of pollution.
2. It is an everlasting source.
संबंधित प्रश्न
State the energy change in the following device while in use:
A loudspeaker
Give one relevant example for the following transformation of energy :
Chemical energy to light energy.
Name the form of mechanical energy, which is put to use.
Name six different forms of energy?
State two disadvantages of producing electricity from solar energy.
Explain the principle of generating electricity from hydro energy.
The following are some of the energy transformations.
A. Electrical to light
B. Work to heat
C. Chemical to light
D. Electrical to sound
E. Mechanical to electrical
Identify the energy transformation that takes place in the following by inserting the corresponding letter in the shape provided.
(i) A candle flame
(ii) A torch is lighted
(iii) A microphone is used in a meeting
(iv) A cycle dynamo
(v) A piece of metal is being filed
State the energy changes which take place when:
A battery lighting up a bulb.
A ball of mass 200 g falls from a height of 5 m. What will be its kinetic energy when it just reaches the ground? (g = 9.8 m s−2)
What is meant by energy?
