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Question

Which of the following energy changes takes place while charging and discharging of the mobile battery?


  1. Charging:- Electrical energy Heat energy

    Discharging:- Heat energy Electrical energy

  2. Charging:- Electrical energy Chemical energy

    Discharging:- Chemical energy Electrical energy

  3. Charging:- Chemical energy Electrical energy

    Discharging:- Electrical energy Chemical energy

  4. Charging:- Electrical energy Chemical energy

    Discharging:- Heat energy Electrical energy


Solution

The correct option is B

Charging:- Electrical energy Chemical energy

Discharging:- Chemical energy Electrical energy


Charging a mobile battery requires electrical energy which is supplied by a power source and further it is stored as chemical energy. Hence, Electrical energy Chemical energy

During the discharging process, i.e., when mobile is not connected to a power source then this stored chemical energy in the battery is used to supply power to mobile. Hence, Chemical energy Electrical energy.

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