Question 3
How much energy is given to each coulomb of charge passing through a 6 V battery?

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Solution

The energy given to each coulomb of charge is equal to the amount of work done for moving it.
Now we know that,
Potential difference = $\frac{W o r k D o n e}{C h a r g e}$
$∴$ Work done = Potential difference $\times$ Charge
$∵$ Charge = 1 C and Potential difference = 6 V
$∴$ Work done = $6 \times 1$ = 6 J

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Q. A 12 V car battery can send a total charge of 84 A.h (ampere-hours) through a circuit, from one terminal to the other.
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Question 3 How much energy is given to each coulomb of charge passing through a 6 V battery?

The energy given to each coulomb of charge is equal to the amount of work done for moving it. Now we know that, Potential difference = Work DoneCharge ∴ Work done = Potential difference × Charge ∵ Charge = 1 C and Potential difference = 6 V ∴ Work done = 6×1 = 6 J

Question 3
How much energy is given to each coulomb of charge passing through a 6 V battery?