A particular 12 V car battery can send a total charge of 120 A-h (ampere-hours) through a circuit?

from one terminal to the other. (a) How many coulombs of charge does this represent? (Hint: See Eq. 21-3.) (b) If this entire charge undergoes a change in electric potential 12 V, how much energy is involved?A particular 12 V car battery can send a total charge of 120 A-h (ampere-hours) through a circuit?a)

120 A-h



A = 1 C/s

A-h = [1 C/s]* hour

A-h = [1 C/s]* 60*60 seocnds = 3600 C.



120 A-h = 120*3600 C. = 432000 C

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b)

Work = potential differece * charge



12*432000 =5184000 joule.

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