Recent content by jslatane

Sorry I have not replied sooner, I have been busy with tests. Thanks for your explanation, it is probably true that the best way to think of it is simply a ratio. I am not sure why you felt the need to bring up the concept of force, this is not what I had in mind, but at any rate, thanks for the...

No, that makes sense. I had physics in high school and that is how my teacher explained it, I had just forgotten about the term altogether. Thanks for clarifying though. Let me see if I can put in my own words: An EMF would be an active source of voltage, where V would refer to a passive source?

Oh ok, I had forgotten about this term, thanks.

Ok, that makes sense. Does E stand for voltage in that equation? Thanks for being patient with this.

Resistance is infinite? Wouldn't that make voltage infinite as well unless current is zero?

Well how can you have a voltage without resistance? You say that the resistor is placed across two conductors which already have different voltages on them, which implies that the voltage would be there even if the resistor was not. But V = IR and if R is 0, then there is no voltage, is that not...

I didn't explain myself very well, I meant that voltage drops across a resistor. This is what happens, correct?

Yeah, that is basically the conclusion I reached from this discussion. Initially I kind of fell into the thinking that you describe, as though resistance is opposition to flow of electrons, but now I realize it does not affect the current, as in the current coming out is not any less than what...

Thanks you guys for the corrections and suggestions. I think I will be able to better explain now that the resistance of an object depends on the situation it is in, and generally as power consumption of the system goes up, the system's resistance will decrease. I will probably not address this...

Ok, that makes sense, I'm not sure why I wasn't looking at it like that before. So what about for larger systems? Say I wanted to describe a household, or really all the electronic devices within it. A quick google search gives me a ballpark figure of 10,000 kWh for an average US home. If the...

Hello, this is my first post on Physics Forums, so if I am making any mistakes, please let me know! My reason for this post is that I am giving a speech to a small class in a few days about resistors. What I wanted to do was to calculate the resistance of some real life objects that people are...