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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
Name the type of energy (kinetic or potential) possessed by the following:
A stretched rubber band.
State the energy changes in the following case while in use:
a ceiling fan
How much hydroelectric power is generated in India?
MULTIPLE CHOICE TYPE:
The ultimate source of energy is:
(a) wood
(b) wind
(c) water
(d) sun
Calculate the decrease in the kinetic energy of a moving body if its velocity reduces to half of the initial velocity.
State the energy changes which take place when:
In a heat engine.
State the energy changes which take place when:
A car moves up a hill.
State the energy changes which take place when:
Water freezes in the freezing chamber of a fridge.
Give one example when:
Electrical energy to heat energy.
In which states is water found in nature?
