What is the color code for a -10 ohm resistor

Have you heard of "milliohms" ?? Most folks express would express that as 0.1ohms or in milliohms. So if you google "Resistor multipliers" you may very well come across the colour code you seek.

By definition it is not a resistor, primarily because it has no resistance.

I suppose you could call it an ass-istor?

Kill file the pathetic troll. He posts his bullshit messages on many newsgroups.

It's the same as a +10 ohm resistor but you turn it around the other way.

A resistor is merely a device that produces a voltage drop that is linearly proportional to voltage. A negative resistance is a perfectly logical concept (and tunnel diodes do exhibit negative resistance over a limited range of voltages and currents).

Making something that exhibited negative resistance over a broader range of voltages and current than a tunnel diode would be tricky, but it could be done.

Whatever ever it was it wouldn't make much sense to mark it with resistor colour codes.

If you were an ass you might.

Come to think of it, they may put the brown mark on the other end of the resistor.

Just buy one please and tell us all.

piglet

Isn't negative resistance a battery? After all one can measure the ESR of batteries...

John ;-#)#

That's still a positive resistance just like a resistor you add to the circuit. The only negative resistance I know of is in certain semiconductor devices and only applies over a limited range of voltage and current.

That's a voltage source plus positive resistance. Negative resistance is one of those phrases that seems to invite misunderstandings.

NT

Best Answer!!

That would only be a negative incremental resistance. A negative resistor can't be a passive device. Power has to be added to get a true negative resistance. Line amplifier are an example of negative resistors.

Gas discharge devices as neon lamps also exhibit negative resistance again only over limited range of voltages and currents.

Dan

Tunnel diode comes to mind

Are you perhaps thinking of reactance, which is some value multipled by sqrt(-1)? Inductors and capacitors are normally not marked with their reactance values because it varies with frequency.

Another possibility is that you have inserted the battery in your ohms-guesser backwards, and are therefore producing negative resistance readings. If not the battery, then perhaps the meter leads have been reversed.

If it were -5 ohms I guess it would start with negative green

NT

I built a -1K resistor once, as a school project. It was fun to play with in various circuits. Voltage dividers with gain, positive exponential time constants, things like that.

One of those opamp negative impedance converters?

George H.

Not a negative resistor. V/I is always positive.