Please select a subject first
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Name the device or machine which convert :
Chemical energy into electrical energy.
Concept: undefined >> undefined
Name the device or machine which convert :
Electrical energy into heat energy.
Concept: undefined >> undefined
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Name the device or machine which convert :
Light energy into electrical energy.
Concept: undefined >> undefined
Name the device or machine which convert :
Electrical energy into light energy.
Concept: undefined >> undefined
Name the device or machine which convert :
Electrical energy into sound energy.
Concept: undefined >> undefined
Name the device or machine which convert :
Heat energy into kinetic energy (or mechanical energy).
Concept: undefined >> undefined
Name the device or machine which convert :
Chemical energy into kinetic energy (or mechanical energy).
Concept: undefined >> undefined
Name the device or machine which convert :
Chemical energy into heat energy.
Concept: undefined >> undefined
Name the device or machine which convert :
light energy into heat energy.
Concept: undefined >> undefined
Fill in the blank with suitable word:
The electricity meter installed in our homes measure electrical energy in the units of ___________.
Concept: undefined >> undefined
Fill in the blanks with suitable words:
When a ball is thrown upwards, ___________ energy is transformed into ___________ energy.
Concept: undefined >> undefined
Fill in the blanks with suitable words :
The principle of ___________ of energy says energy can be transformed from one form to another, but it cannot be ___________ or ___________.
Concept: undefined >> undefined
What kind of energy transformation take place at a hydroelectric power station?
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What kind of energy transformations take place at a coal-based thermal power station?
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How much electrical energy in joules does a 100 watt lamp consume : in 1 second?
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How much electrical energy in joules does a 100 watt lamp consume : in 1 minute?
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Five electric fans of 120 watts each are used for 4 hours. Calculate the electrical energy consumed in kilowatt-hours.
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Describe the energy changes which take place in a radio.
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Write the energy transformations which take place in an electric bulb (or electric lamp).
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A bulb lights up when connected to a battery. State the energy change which takes place :
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