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why do the Mobile phones need to be charged?
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- ?Lv 61 decade agoFavorite Answer
coz it needs energy which it gets from a capacitor and which is not a continuous source of energy. It discharges after some time and hence needs to be charged again
- 1 decade ago
It is based on law of conservation of energy
Phone emits light, sound and mechanical(when it is in vibration mode) energies
So its energy gets finished.
So it need to be charged by electrical energy
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