For most purposes, we store electrical energy in batteries. But there are drawba
ID: 1658122 • Letter: F
Question
For most purposes, we store electrical energy in batteries. But there are drawbacks to batteries: They release their energy rather slowly and are very damaging environmentally. Capacitors would be much cleaner for the environment 1) A new 1.5-V AAA battery has a "capacity" (not capacitance) of 1050 mA-h. What does this "capacity" actually represent? Express it in standard SI units. (Express your answer to three significant figures.) kC Submit You currently have 0 submissions for this question. Only 10 submission are allowed. You can make 10 more submissions for this question. 2) How many joules of energy can be stored in the AAA battery?( (Express your answer to two significant figures.) kJ Submit You currently have 0 submissions for this question. Only 10 submission are allowed. You can make 10 more submissions for this question.Explanation / Answer
1) The battery has a capacity of 1050 mA.h. This means, it can supply 1050 milliamps (mA) of current in 1 hour. Now, 1000 milliamps = 1 ampere. So, 1050 milliamps = 1.05 ampere. Therefore, this battery will provide 1.05 ampere of current in 1 hour.
Now, Charges in coulomb (C) = charges in ampere-hour * 3600
So, 1.05 Ah * 3600 = 3780 C = 3.78 kC
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