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प्रश्न
In an electric cell while in use, the change in energy is from ______.
विकल्प
Electrical to mechanical
Electrical to chemical
Chemical to mechanical
Chemical to electrical
उत्तर
In an electric cell while in use, the change in energy is from chemical to electrical.
संबंधित प्रश्न
Fill in the blank
Green plants convert _________ energy into chemical energy.
State the energy changes that occur in the following :
Burning coal while operating a steam engine.
State the energy changes that occur in the following :
Lighting of a torch bulb.
Energy can exist in several forms and may change from one form to another. State the energy changes that occur in the unwinding of a watch spring.
Energy can exist in several forms and may change from one form to another. State the energy changes that occur in a loaded truck when started and set in motion.
A metal ball of mass 2 kg is allowed to fall freely from rest from a height of 5 m above the ground. What happens to the mechanical energy after the ball hits the ground and comes to rest?
Explain conservation of energy.
Law of conversation of energy given by ______.
Can any object have mechanical energy even if its momentum is zero? Explain.
Define watt. Express kilowatt in terms of joule per second. A 150 kg car engine develops 500 W for each kg. What force does it exert in moving the car at a speed of 20 ms–1?
