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प्रश्न
State the energy changes which take place when:
A bulb glows, when torchlight is switched on.
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उत्तर
The chemical energy of cell changes to electric energy. The electric energy first changes to heat and finally to light energy.
संबंधित प्रश्न
Fill in the blank
The energy possessed by a body due to its motion is called ______ energy.
Give one relevant example for the following transformations of energy:
Chemical energy to heat energy.
Select the renewable and non-renewable sources of energy from the following:
Water
How is wind energy used to produce electricity?
Give one example when:
Electrical energy to heat energy.
A girl of mass 35 kg climbs up from the first floor of a building at a height 4 m above the ground to the third floor at a height 12 m above the ground. What will be the increase in her gravitational potential energy? [g = 10 ms-2]
Obtain an expression for the kinetic energy of a body of mass m moving with a velocity v?
Can you tell?
What are the various forms of energy?
A good fuel should possess:
