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swap1996 said:What is the equivalent resistance between A and B in this case...
Nugatory said:If the wires were really perfect conductors with zero resistance, then there would be no voltage difference between the two ends of the resistor and therefore no current flow through the resistor.
In practice, no wire is a perfect conductor so there's always some tiny resistance and therefore some tiny voltage difference across the resistors to drive some tiny current flow through the resistor. However this current will be well and thoroughly negligible compared with the current through the wires (which will very quickly melt, burn, catch on fire, or explode if there's no fuse, internal resistance in the power supply, or some other current-limiting device).
Nugatory said:Try redrawing that picture so that the resistors are side by side on your sheet of paper... You'll find that this makes the problem much easier.
technician said:Where does superconductivity fit in this explanation? I understand that superconductors have zero resistance and currents do flow in suoerconductors
swap1996 said:Can you explain it properly, perhaps upload the diagram you are referring to...
swap1996 said:Can you explain it properly, perhaps upload the diagram you are referring to...
Nugatory said:There is always some current-limiting device in such a setup, so infinite currents are not observed. But you are right that a superconductor can behave a lot more like an ideal wire than anything you're going to be able buy in a roll and solder together.
technician said:Where does superconductivity fit in this explanation? I understand that superconductors have zero resistance and currents do flow in suoerconductors
technician said:It was not suggested that the current was infinite !
What 'current-limiting device'do you have in mind?
As Crazymechanic already pointed out, the equivalent resistance between A and B is R2 .swap1996 said:What is the equivalent resistance between A and B in this case...
Current through a conductor of zero resistance refers to the flow of electricity through a material with no resistance, meaning there is no opposition to the flow of electrons.
Yes, certain materials such as superconductors have the ability to conduct electricity with zero resistance when cooled to extremely low temperatures.
Conductors with zero resistance allow for a more efficient flow of electricity, resulting in less energy loss and lower operating costs. They also have the potential for faster data transmission and can be used to create powerful electromagnets.
According to Ohm's law, in a conductor with zero resistance, the current and voltage are directly proportional. This means that as the voltage increases, so does the current, resulting in a constant ratio between the two.
No, since there is no resistance, there is no energy dissipated in the form of heat. This means that a conductor with zero resistance will not overheat or catch fire, making it a safer option for high-power applications.