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प्रश्न
Select the correct alternatives
The energy stored in an electric cell is
विकल्प
chemical energy
electrical energy
heat energy
mechanical energy.
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उत्तर
chemical energy
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संबंधित प्रश्न
Which of the following produces more heat (per unit mass) on burning?
What is the source of heat contained in geothermal energy?
Fill in the blank
The energy possessed by a body due to its motion is called ______ energy.
Give one relevant example for the following transformation of energy :
Electrical energy to light energy.
A light mass and a heavy mass have equal momentum. Which will have more kinetic energy?
(Hint : Kinetic energy K = P2/2m where P is the momentum.)
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:
Water stored in dams rotates turbine connected to a dynamo.
Give one example when:
Kinetic energy changes to heat energy.
Show that in case of a body falling freely under gravity, total mechanical energy remains conserved (neglect air resistance).
Can you tell?
What are the various forms of energy?
