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give the energy changes which take place in a battery operated torch

Sagot :

chemical energy-----electrical energy-----light energy 
The battery converts its stored chemical energy to electrical energy,the wires attached carries this electrical energy to the bulb.
When this energy passes through the filament of the bulb,it gets heated radiating heat energy and lights up to provide light energy

Chemical energy - Electrical energy - Heat energy - Light energy

Sound energy might be created(sorry not sure about that)

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