It was controlled with a 15A breaker,therefore its resistance can be assumed 110V / 15A = 7.3 ohm
-
Previous answer is for DC, not AC.
Also, one can easily see that a socket could supply a lot more current before the breaker pops.
Blade to socket metal resistance is very low--less than 1 ohm. I just measured between a brand new socket and a new plug (NEMA 5-15) with a DMM and got about 0.3 ohms.
Also, one can easily see that a socket could supply a lot more current before the breaker pops.
Blade to socket metal resistance is very low--less than 1 ohm. I just measured between a brand new socket and a new plug (NEMA 5-15) with a DMM and got about 0.3 ohms.
-
OK, first things first, we need to clarify a few terms. Ohms are a measure of electrical RESISTANCE, NOT A MEASURE OF ELECTRICAL STRENGTH OR POWER. Unfortunately, many people misunderstand this because a common specification of speakers or amplifier speaker outputs is how many ohms it is cable of, or for speakers how many ohms the speaker is rated for. This gives the impression that Ohms is some type of power measure (which in a backhanded way I suppose kind of is).
Again, Ohms are a measure of electrical resistance. Like wire gauge, resistance is HIGHER the larger the number, and lower the resistance the lower the number. A DIRECT SHORT, or ABSOLUTELY NO RESISTANCE is given as 0 Ohms (obviously). Now, here we go, what does a speaker rated at 8 ohms mean? This means that when an electrical signal is presented to a speakers positive or negative terminal, to have those electrons travel through the voice coil and move the cone and then back out the other terminal (the trip those electrons take through the speaker motor), those electrons are presented with 8 Ohms of electrical resistance. What does this mean? Well, it means that regardless of HOW MUCH current (watts) you pump through those speakers, that current will ALWAYS encounter 8 Ohms of electrical resistance.
How is this resistance determined? Well, that takes a little more space than I have here, but to make things simple, lets just say ONE of those things was how much copper wire was would around the voice coil. Obviously, more wire (longer) or thicker wire means more electrical resistance (the electrons obviously have to travel much further and through thicker wire). The actual frequency the speaker is reproducing also determines the resistance. Some notes produce less resistance than others. But almost all speakers are given a resistance in ohms that represent an average OR the resitance when producing 1000 Hz at 1 watt.
Again, Ohms are a measure of electrical resistance. Like wire gauge, resistance is HIGHER the larger the number, and lower the resistance the lower the number. A DIRECT SHORT, or ABSOLUTELY NO RESISTANCE is given as 0 Ohms (obviously). Now, here we go, what does a speaker rated at 8 ohms mean? This means that when an electrical signal is presented to a speakers positive or negative terminal, to have those electrons travel through the voice coil and move the cone and then back out the other terminal (the trip those electrons take through the speaker motor), those electrons are presented with 8 Ohms of electrical resistance. What does this mean? Well, it means that regardless of HOW MUCH current (watts) you pump through those speakers, that current will ALWAYS encounter 8 Ohms of electrical resistance.
How is this resistance determined? Well, that takes a little more space than I have here, but to make things simple, lets just say ONE of those things was how much copper wire was would around the voice coil. Obviously, more wire (longer) or thicker wire means more electrical resistance (the electrons obviously have to travel much further and through thicker wire). The actual frequency the speaker is reproducing also determines the resistance. Some notes produce less resistance than others. But almost all speakers are given a resistance in ohms that represent an average OR the resitance when producing 1000 Hz at 1 watt.
12
keywords: out,at,wall,110,outlet,does,What,ohm,What does a 110 wall outlet ohm out at