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  1. A fully charged mobile phone with a 12 V battery is good for a 20 minute talktime. Assume that, during the talk time, the battery delivers a constant current of 2 A and its voltage drops linearly from 12 V to 10 V as shown in the figure. How much energy does the battery deliver during this talk time?

    2. A.
    220 J
    B.
    12 kJ
    C.
    13.2 kJ
    D.
    14.4 kJ

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    Answer : Option C

    Explanation :

    No answer description available for this question.

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