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प्रश्न
Give one example when:
Mechanical energy changes to electric energy.
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उत्तर
In an electric generator, the mechanical energy changes to electric energy.
संबंधित प्रश्न
Explain the principle of generating electricity from hydro energy.
What is nuclear energy?
Show that the quantity 2K/v2 has the unit of mass, where K is the kinetic energy of the body.
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 ?
Give three examples of bodies possessing kinetic energy.
What kind of energy is possessed in a situation when?
An electron spinning around the nucleus.
State the energy changes which take place when:
A bulb glows, when torchlight is switched on.
State the energy changes which take place when:
During electrolysis.
Two bodies, A and B of equal mass are kept at heights 20 m and 30 m respectively. Calculate the ratio of their potential energies.
