Voltage between two points on an empty wire

In summary: Ohm's law states that the voltage across a battery is nonzero and that voltage across anything that has resistance is nonzero. Why is that? Why is Ohm's law the way it is?In summary, voltage is a measure of electric potential energy and it is affected by the resistance of an object in the circuit.
  • #36
jim hardy said:
This takes time , and when it "clicks" you will be unable to even remember when it wasn't intuitive.
This is such an important point. People who claim not to have an "intuitive" feeling about a topic and that it "doesn't make sense" seem to assume that they were actually born with the ideas they are using at the time. As far as I am aware, there is no intellectual process that we are actually born with. All we start with is the basic tools for us to process such things. All the rest is learned and acquired during our lives. The time that people spend in trying to justify a badly informed position would be much better spent in using the combined wisdom of history to bring themselves up to speed with the conventional views. IFF they happen to be a genius like Newton, Einstein, Pauli etc. then they may later be in a position to challenge those ideas and make a change to the textbooks. Personally, I reckon that those guys didn't mess about, challenging well established stuff. They went along with it, until they knew it forwards, backwards and sideways and then got on with altering history.
 
  • Like
Likes OmCheeto, cnh1995 and jim hardy
<h2>1. What is voltage between two points on an empty wire?</h2><p>Voltage between two points on an empty wire is the difference in electric potential energy per unit charge between those two points. It is measured in volts (V) and represents the amount of work needed to move a unit of electric charge from one point to another.</p><h2>2. How is voltage calculated between two points on an empty wire?</h2><p>Voltage is calculated by dividing the change in electric potential energy by the amount of charge that is moved between the two points. Mathematically, it can be represented as V = ΔPE/q, where V is voltage, ΔPE is the change in potential energy, and q is the amount of charge.</p><h2>3. Does the voltage change along an empty wire?</h2><p>No, the voltage remains constant along an empty wire. This is because an empty wire does not have any resistance or components that can cause a drop in voltage. Therefore, the voltage between any two points on an empty wire will be the same.</p><h2>4. Can the voltage between two points on an empty wire be negative?</h2><p>Yes, the voltage between two points on an empty wire can be negative. This can happen if the electric potential energy decreases as the charge moves from one point to another. However, it is more common for the voltage to be positive, as the electric potential energy usually increases in the direction of the electric field.</p><h2>5. How does the voltage between two points on an empty wire affect the flow of current?</h2><p>The voltage between two points on an empty wire determines the direction and rate of flow of electric current. Current flows from a higher voltage to a lower voltage, and the greater the voltage difference, the greater the current flow. If the voltage between two points on an empty wire is zero, no current will flow.</p>

1. What is voltage between two points on an empty wire?

Voltage between two points on an empty wire is the difference in electric potential energy per unit charge between those two points. It is measured in volts (V) and represents the amount of work needed to move a unit of electric charge from one point to another.

2. How is voltage calculated between two points on an empty wire?

Voltage is calculated by dividing the change in electric potential energy by the amount of charge that is moved between the two points. Mathematically, it can be represented as V = ΔPE/q, where V is voltage, ΔPE is the change in potential energy, and q is the amount of charge.

3. Does the voltage change along an empty wire?

No, the voltage remains constant along an empty wire. This is because an empty wire does not have any resistance or components that can cause a drop in voltage. Therefore, the voltage between any two points on an empty wire will be the same.

4. Can the voltage between two points on an empty wire be negative?

Yes, the voltage between two points on an empty wire can be negative. This can happen if the electric potential energy decreases as the charge moves from one point to another. However, it is more common for the voltage to be positive, as the electric potential energy usually increases in the direction of the electric field.

5. How does the voltage between two points on an empty wire affect the flow of current?

The voltage between two points on an empty wire determines the direction and rate of flow of electric current. Current flows from a higher voltage to a lower voltage, and the greater the voltage difference, the greater the current flow. If the voltage between two points on an empty wire is zero, no current will flow.

Similar threads

Voltage between two points on an empty wire and also across a resistor
    • Electrical Engineering
Replies
12
Views
1K
Wheatstone bridge and conditions for current to flow between 2 points
    • Electrical Engineering
Replies
8
Views
2K
Residual voltage on a ground wire
    • Electrical Engineering
Replies
18
Views
3K
Earth grounded, where does the current flow?
    • Electrical Engineering
Replies
19
Views
3K
Effect of resistance on voltage flow in a wire
    • Electrical Engineering
Replies
9
Views
2K
Determining inductive reactance from a 3-phase AC circuit
    • Electrical Engineering
Replies
17
Views
2K
B The voltage between two points
    • Electromagnetism
Replies
10
Views
169
Puzzled by how the Voltage is the same across different points
    • Electrical Engineering
Replies
9
Views
2K
The Effects of Resistance on Voltage
    • Electrical Engineering
Replies
5
Views
2K
Understanding Capacitor Behavior for Noise Filtering?
    • Electrical Engineering
Replies
15
Views
3K

Hot Threads

Recent Insights

Back
Top