# A Question about potential difference in Wire

Okay...I got a question. Charges move in a wire due to an electric field across its ends. Now, positive test charge in an electric field would have higher electric potential nearer to the positive plate than anywhere else. Now in case of a circuit, like the one I have drawn, the electric potential at any point between A to D is the same (please point out if there is something wrong in the statement. My question is the, as we move further away from the positve terminal, the electric potential should decrease, so why does it not??...If someone could point out potential differences at the different points in the circuit, that'd be helpful...Any help is appreciated

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berkeman
Mentor
Okay...I got a question. Charges move in a wire due to an electric field across its ends. Now, positive test charge in an electric field would have higher electric potential nearer to the positive plate than anywhere else. Now in case of a circuit, like the one I have drawn, the electric potential at any point between A to D is the same (please point out if there is something wrong in the statement. My question is the, as we move further away from the positve terminal, the electric potential should decrease, so why does it not??...If someone could point out potential differences at the different points in the circuit, that'd be helpful...Any help is appreciated
Are you familiar with the concept of "voltage division" for resistances in series? BvU
Homework Helper
Hi,
My question is the, as we move further away from the positve terminal, the electric potential should decrease, so why does it not
First we have to make clear if the wire is an ideal conductor.
If it is, the full 12 V voltage drop occurs in the bulb (DE)
If it is a real wire (a thin wire with non-zero restance), voltage drop occurs linearly between A and D and also between E and G, so the the voltage drop between D and E is slightly less than 12 V.

Baluncore