Numerical - need solution to the task

renzworldc said:

A fully charged mobile phone with a 12v battery is good for 10mins talk-time. Assume that during talk-time, the battery delivers a constant current of 2A and its voltage drops linearly from 12 V to 10 V as shown in figure. How much energy does the battery deliver during this talk-time?
Ans: a. 220 J
b. 12 J
c. 13.2 J
d. 14.4 J
plz tel me how to solve it..?

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renzworldc said:

yes I made a mistake in typing the ans..its KiloJoule instead of Joules..
nyways thanks.

if u don't want points u may better not post coz therz no compulsion.. why bothering the admin..

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