Recent content by DHS Science

I have a 12 volt car battery hooked up directly to a 6 gauge wire that is wrapped around an iron rod. For some reason the wire can only last around 30 seconds and the wire completely melts and no longer works. How is it that a 12 volt battery has enough amps to melt a 6 gauge wire?

As I'm thinking about this... Leibniz notation can't just be shorthand for the limit definition of a derivative because the limit of the change in y over the limit of the change in x is not equal to the limit of the change in y over the change in x

so are you saying that dy/dx is not the ratio, but rather the limit of the ratio? Shorthand, if you will, for the limit definition of a derivative? If this is the case, then why can you split the ratio (like in a u subsitution) AFTER you take the derivative? I know the proof for the chain...

Leibniz notation is made of ratios of differential operators? right? what does this mean? What is a differential operator? Why can we take this ratio? In a u subsitution, why can we break apart du/dx? this doesn't make sense!

well we have 6 gauge wire and i was going to put a 15 amp fuse in the circut but i am not sure if that is still to many amps

We decided to use a car battery so it is pushing out 12 volts and the wire that we are using is still getting really hot. In order for the coil to maintain the same strength we hooked a battery charger up to it, which did the job but should we put a breaker (like from a fuse box) in it to help...

The power cord does not give an answer directly if just gives (what appears to me at least) a random configuration of numbers and letters.

If we were to use a power cord from a computer then how much power (amps, volts, watts) would that allow to enter the magnet if we were getting our power straight out of the wall? Sorry if I am asking stupid questions but I would really like it if we would not burn the school down.

Hover: "DHS Science i have a question for you, how strong are you trying to make your electromagnet? Are you just trying to run some current through a wire to create a simple electromagnet or are you trying to create the strongest electromagnet you can make??" I am trying to make the...

I am using a power cord from a regular computer. But that does not allow the whole 120V thru it correct? If I were to buy different resistors then I would want some that allow less ohms to run thru them? I don't mean to ask stupid questions but I am really confused about some of this...

The resistor that I am using is a 1-megaohm resistor that is 1/2 watt and has 5% tolerance. I have 5 of them in all, so would it be better to use like 2 or more of them or should I try and find one that can handle more watts and less ohms. So if i were to use more than one of the resistors...

The only problem with using a resistor is that we cannot find one powerful enough for the application that we are using the magnet for. I have thought about using a breaker like what is in an electrical box but I am not for sure how much power the magnet will be pulling from the wall and I...

Will that resistor be able to run for 24 hours straight tho or will that be to long for it? Thanks for all of the help and sorry again about all of the questions.

I will get those specs to you within the next couple of days because I will not be able to get into the school. But I have another question for you if that would be alright. I was wondering if what exactly you meant when you said that you used a "power supply." Did you mean that you used a...

We are using a steel rod as a core and a 12 volt battery as our power supply at the moment but we would galdly take any suggestions on what we should use instead. If you could please try and explain what a "ferromagnet" is? Thank for your help.