Question

How much energy is transferred by a 12v power supply to each coulomb of charge qhich it moves around a circuit?

Answer 1

Heya ,,,

Solution ......

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The term 'each coulomb 'means 'every 1 coulomb', so the charge here is 1 coulomb
The potencial difference is 12 v . we have to find out the energy .
This energy will be equal to the work done

Now ,

$potencial \: \: difference = \frac{work \: \: done}{charge \: \: moved}$
or
$v = \frac{w}{q} \\ \\ 12 = \frac{w}{1}$
$so \\ \\ work \: \: done \: (w) = 12 \times 1 \: \: joules \\ = 12 \: \: j$

Since the work done on each coulomb of charge is 12 joules , therefore , the energy given to each coulomb of charge is also 12 joules .

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Hole it's helps you .
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Answer 2

Answer:12J

Explanation:

As Potential Difference is 12 V

Here it is said that

Each coulomb that means Charge = 1 C

Now ,

V=W/Q

or, V×Q=W

Putting the value with given data

or,W=12×1

Therefore , W=12 J