Is it possible to have a resistor with negative resistance?
If the answer is yes, then provide examples of such materials. If it is not possible, then explain why not.
- 1 decade agoFavorite Answer
I'm fairly certain that negative resistance would be the same as negative friction... I don't think it is possible. Otherwise, electricity would flow without a difference in voltage potential. I think that the concept has been exhibited in a circuit, but not a standalone component, like a resistor.
- JaneLv 45 years ago
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ℰ = V1 + V2 ℰ = Ir + IR ℰ = I∙(r + R) I would assume the current is negative in this case. It is possible to have a negative resistance, but only with special resistors and certain scenarios. Current will read positive or negative, depending on how the ammeter is wired.
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- lithiumdeuterideLv 71 decade ago
A passive circuit element which adds energy to a circuit, rather than removing it? That would be a free-energy device, and the laws of thermodynamics prohibit such devices from existing. You can get as creative as you like, but you won't find a way to build such a device.
- gintableLv 71 decade ago
No, because that would create big problems for conservation of energy if it were to exist.
- AprilLv 45 years ago
In parallel. 1/Rt = 1/R1 + 1/R2 . Use this formula
- 1 decade ago
Wouldn't it then be considered a super conductor, not a resistor?