A fully charged mobile phone with a 12V battery is good for a 10minute talk-time. Assume that, during the talk-time, the battery delivers a constant current of 2A and its voltage drops linearly from 12 V to 10V as shown in the figure. How much energy does the battery deliver during this talk-time?
|(A) 220 J||(B) 12 kJ||(C) 13.2 kJ||(D) 14.4 kJ|
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