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प्रश्न
Give an example
Electrical energy changes of sound energy.
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उत्तर
Electric bell
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संबंधित प्रश्न
A pair of bullocks exerts a force of 140 N on a plough. The field being ploughed is 15 m long. How much work is done in ploughing the length of the field?
The S.I. unit of work is
Is it possible that a force is acting on a body but still the work done is zero? Explain giving one example.
How much work is done by the gravitational force of earth acting on a satellite moving around it in a circular path? Give reason for your answer.
Draw a neat labeled diagram to show the direction of two forces acting on a body to produce rotation in it. Also mark the point about which rotation takes place.
State the energy changes which take place when Water stored in the dam is used to turn turbine in dynamo.
State the energy changes which take place when An electric bulb glows when it is connected to a source of electric current.
Can two agents, doing the same work, have different power?
What is the difference between renewable and non-renewable resources?
If a ball is dropped on the sloping roof of a house, it acquires ______ and falls on the ground. That is the transformation of ______ energy into ______ energy takes place.
(kinetic, potential, motion)
