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Q.

How much energy is transferred by a 12 V power supply to each coulomb charge which it moves around a circuit?


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a

3 joule

b

6 joule

c

12 joule

d

24 joule 

answer is C.

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Detailed Solution

12 joule energy is transferred by a 12 V power supply to each coulomb of charge which moves around a circuit.
Here, the charge moved (Q) = 1 C
Potential difference (V) = 12 V
Let W be the work done.
We know, W = Q × V
 W = 1 ×12 
                  = 12 joule
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How much energy is transferred by a 12 V power supply to each coulomb charge which it moves around a circuit?