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प्रश्न
What is the main energy transformation that occur in:
Charging of a battery.
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उत्तर
Electric energy to chemical energy.
संबंधित प्रश्न
Name the type of energy (kinetic or potential) possessed by the following:
A stone at rest on the top of a building.
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.)
Name the two groups in which various sources of energy are classified. State on what basis are they classified.
Give one disadvantage of using a solar cell.
A metal ball of mass 2kg is allowed to fall freely from rest from a height of 5m above the ground.
What the kinetic energy of the ball just before it hits the ground ?
Write five forms of energy.
Write the type of energy possessed in the following case:
A bent bow
State the energy changes which take place when:
A car moves up a hill.
The solar cooker is an application of the ______ energy of the sun, while solar cells, solar lamps are applications of the ______ energy of the sun.
Match the pairs.
| Group 'A' | Group 'B' | ||
| (1) | Rolling object | (a) | Heat energy |
| (2) | Food | (b) | Atomic energy |
| (3) | Stretched bow | (c) | Kinetic energy |
| (4) | Sunlight | (d) | Potential energy |
| (5) | Uranium |
(e)
|
Chemical energy
|
