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प्रश्न
State different forms of potential energy and give one example of each.
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उत्तर
Different forms of P.E. are as listed below:
(i) Gravitational potential energy: The potential energy possessed by a body due to its position relative to the centre of Earth is called its gravitational potential energy.
Example: A stone at a height has gravitational potential energy due to its raised height.
(ii) Elastic potential energy: The potential energy possessed by a body in the deformed state due to change in its configuration is called its elastic potential energy.
Example: A compressed spring has elastic potential energy due to its compressed state.
संबंधित प्रश्न
Explain how, geothermal energy is used to generate electricity.
Give one example of a body that has potential energy, due to its position at a height.
A hydroelectric power station takes its water from a lake whose water level is 50 m above the turbine. Assuming an overall efficiency of 40%, calculate the mass of water which must flow through the turbine each second to produce power output of 1 MW. (Take g = 10 m s−2).
What kind of energy is possessed in a situation when?
Water stored in dams.
What is the main energy transformation that occur in:
Charging of a battery.
State the energy changes which take place when:
A body released from rest from the top of a building.
State the energy changes which take place when:
In a heat engine.
State the energy changes which take place when:
A stone projected vertically upwards, returns back to the thrower.
Give one example when:
Electric energy changes to potential energy.
Give one example when:
Electrical energy to heat energy.
