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Ability of a body to do work is known as energy. For example, a electric battery has electrical energy that can be used to drive a small fan or lamp. Unit of energy is same as that of work i.e. Joule.

There is a basic law about energy, called law of conservation of energy. it says that energy is indestructible. it can only be converter from one form to the others and can be transferred between the bodies.

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12y ago

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