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

Charging:- Electrical energy $\to$ Heat energy

Discharging:- Heat energy $\to$ Electrical energy

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Charging:- Electrical energy $\to$ Chemical energy

Discharging:- Chemical energy $\to$ Electrical energy

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Charging:- Chemical energy $\to$ Electrical energy

Discharging:- Electrical energy $\to$ Chemical energy

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Charging:- Electrical energy $\to$ Chemical energy

Discharging:- Heat energy $\to$ Electrical energy

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Solution

The correct option is B
Charging:- Electrical energy $\to$ Chemical energy

Discharging:- Chemical energy $\to$ 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 $\to$ 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 $\to$ Electrical energy.

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