Ohms law

michaelkellett I'm with you.

I've managed all these years without worrying about the unseen things causing it to happen.

Quite frankly I don't really care which way they actually move, as long as something is moving there is current flowing.

For the debaters ...

I'm sure there is room for this debate, but hijacking what I would consider a reasonable question about a formula, may not be the best place.

If you want to start another conversation, I have a really humourous story to add about the possibility of thinking alternatively.

Mark

Hi Mark,

I am sorry about my part in the Hijack. I forgot the simple rules of the forum which state:

Never Hijack someone else's thread nor participate in such Hijack with only these few exceptions:

1. You feel like it.

2. You forgot to say something to another poster last week.

3.The current thread reminds you of something you heard or read.

4. You need 5 more points to break into the next level.

5. The Hijack subject is really cool.

6.

Since I am out of time and need to run I would welcome help with the rest of the list. Remember this is all for the sake of science.

John

Never Hijack someone else's thread

Except in TM where the idea is to see if we can change the subject content to soemthign entirely different.

I just think that there is room for the debate, just not in this post.

salesm21

Hopefully you've got some things to help you rearrange how you see it.

I tend to have to match things a little and then suddenly they click into place, with the thought Duuuh, why didn't I see that before ....

Mark

wait, is this my cue to post cat pictures again?

To all in thread,

I appreciate all the feed back and never discourage differing ideas and actually encourage the behavior. I love having someone change the way I think or is very passionate about the way things are. The reason I asked the question is that I will be going to Florida Tech next year and intend to get my dual major in Electrical engineering/Computer science. Then I want to intern at space X or maybe JPL and work on something space related. In your opinions I want to know how in depth of an understanding you think is necessary to accomplish my goals. In regards to all post up to this point it has painted a lovely picture in my mind about voltage and current. Let me just state what I believe to be true (Based on conventional theory due to my lack of understanding of physics at this time).

In order to understand I had to think of voltage in terms of resistance. When you use a multi meter to measure resistance what are you doing? You multimeter, armed with an internal source of voltage, measures how hard it is to push current though whatever your measuring. By seeing how much current was pushed through to the other side you are able to see how much resistance there is based on OHM's law.

Again thanks for all the support and keep the comments flying( No matter how off topic us nerds get)

Hi Mitchell,

What you explain was all proper. I think you are going to be successful in your goal. I was pleased to see from your other post that you are doing something that I feel is essential to success in any field of endeavor and that is self educate. I would also encourage you to concentrate on the foundational knowledge of your goal. You may be able to get by if you don't have it but you will never regret knowing the basics and it will give you a leg up on the other students. I would recommend that you find a good text book on Physics and Calculus and start working your way through them. Most texts have the answers in the back of the book to some of the review questions. If you concentrate on these questions you will have a way to test yourself. I feel that the basic knowledge is of particular importance if you will be coding which requires that you know the complexities of the real world so that you can create the model that you are coding. In my opinion the big difference between those who get by and those who excel is the ability to self educate. I wish you the best of luck.

John

Hi Mitchell,

I like your plan. As someone who hired students to work part time, you first need to see what skills each company is looking for.

I always set up entry level jobs so that students could start with just the basics. If they could write software, then there was more places to start them.

Key interview tip, be positive without overselling your capabilities. Be honest and most important, demonstrate a positive attitude and willingness to be flexible.

Most of the students I hired was based on their attitude as I always had a wide range of tasks to assign them to.

Let me know if I can help in any way.

As for your multimeter question, the meter sends a specific voltage across the probes and measures the current that flows between the probes. R = V/I.

The various ranges on the meter establish different meter sensitivities for the current so that the meters could register the appropriate range.  Digital meters change the scale factor for the A/D converter and allows the software to do the work.

Electronics is fun and reasonably easy to learn. As you progress in your studies, you will find a wealth of hidden issues that dive much deeper into the real issues.  Hence my new theories and research. There is much we know, more we think we know, and a whole lot more that everyone is guessing about. Like I said, the deeper you look, the less that you find you really know.

As the others have identified, the early basics are more than good enough for you to progress into being able to do useful things with electronics. After forty years, I have to say, I have greatly enjoyed working in the field. Now that I am no longer working, I have the time to investigate all of those little issues that did not make sense when I was in school.

Good luck,

DAB

PS, I would apologize for hijacking your thread, but I have already explained that I derive a lot of entertainment from doing so, and I hate to lie.