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सी.आई.एस.सी.ई.आयसीएसई ICSE Class 7

Give One Relevant Example for Each of the Following Transformation of Energy : Electrical Energy to Mechanical Energy. - Physics

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प्रश्न

Give one relevant example for the following transformation of energy:

Electrical energy to mechanical energy.

एक शब्द/वाक्यांश उत्तर
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उत्तर

 An electric generator.

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पाठ 3: Energy - Short/Long Answer Questions

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सेलिना Concise Physics [English] Class 7 ICSE
पाठ 3 Energy
Short/Long Answer Questions | Q 20.2

संबंधित प्रश्‍न

State the energy change in the following device while in use:

A glowing electric bulb.


Name the type of energy (kinetic or potential) possessed by the following:

Water flowing in a river.


Give one example to show the conversion of potential energy to kinetic energy when put in use.


A ball is made to fall freely from a height. State the kind/ kinds of energy possessed by the ball when it is just in the middle .


Name three non-renewable sources of energy.


Explain the principle of producing electricity using the nuclear energy.


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:

Photographic film is exposed to sunlight.


A girl of mass 35 kg climbs up from the first floor of a building at a height 4 m above the ground to the third floor at a height 12 m above the ground. What will be the increase in her gravitational potential energy? [g = 10 ms-2]


Energy from various sources is considered to have been derived from the sun. Do you agree? Justify your answer.


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