Question: A particular 12V car battery can send a total charge of 84 A h (ampere-hours) through a circuit, from one terminal to the other.

A particular 12V car battery can send a total charge of 84 A ∙ h (ampere-hours) through a circuit, from one terminal to the other.

(a) How many coulombs of charge does this represent?

(b) If this entire charge undergoes a change in electric potential of 12 V, how much energy is involved?

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