- #1
Cyrus
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Im having trouble grapshing this concept. Can anyone please explain what voltage across two points means. Does it mean that one point is at a higher potential energy than the other point? Does it mean that the charges present are closer to the point a, and thus produce a stronger net force when a charged body is placed at point a, than at point b? I am trying to see how you get a potential inside a wire. I know you need a battery, but what does that mean in terms of the charges inside the wire?
U(potential) = 1/4pi epsilon * q q0 / r^2.
and V = 1/4pi epsilon * q /r^2
How does the definition of potential and potential energy relate to a circuit. Let's juse use a simple one, a battery and a light bulb or a resistor or something. How do these equations apply, more imporantly what is the MEANING of it?
I don't see how we can talk about voltage in a wire to begin with. The book does cases of voltage where charge is not moving and is treated as points or a continuous distribution. In a wire, the charge is moving around the circuit.
U(potential) = 1/4pi epsilon * q q0 / r^2.
and V = 1/4pi epsilon * q /r^2
How does the definition of potential and potential energy relate to a circuit. Let's juse use a simple one, a battery and a light bulb or a resistor or something. How do these equations apply, more imporantly what is the MEANING of it?
I don't see how we can talk about voltage in a wire to begin with. The book does cases of voltage where charge is not moving and is treated as points or a continuous distribution. In a wire, the charge is moving around the circuit.
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