Hi
Please have a look on this picture:
http://img696.imageshack.us/img696/8841/powersupplyg.jpg
If I connect one lead to the ground terminal and the other one to -ve terminal, I will have 0V to -30V. Correct? But what does this really mean? What is the direction of electron current? Before you answer this, I would request you to go through the entire post.
I have always thought -ve terminal is simply taken the ground because conventional current flows towards this terminal.
In 'actuality' electrons (or electron current) flows from -v terminal toward +ve terminal. I could get 0V to 30V when I have leads connected to +ve and -ve terminals. But I could also get the same range of voltage, 0V to 30V, when I have one lead connected to the +ve and the other one to the ground. Is then the ground also a '-ve' terminal because there should be something which is pumping electrons into +ve terminal?
I hope you can see my confusions and I do hope you would be able to help me out to clear them. Thanks a lot.
Regards
PG
Please have a look on this picture:
http://img696.imageshack.us/img696/8841/powersupplyg.jpg
If I connect one lead to the ground terminal and the other one to -ve terminal, I will have 0V to -30V. Correct? But what does this really mean? What is the direction of electron current? Before you answer this, I would request you to go through the entire post.
I have always thought -ve terminal is simply taken the ground because conventional current flows towards this terminal.
In 'actuality' electrons (or electron current) flows from -v terminal toward +ve terminal. I could get 0V to 30V when I have leads connected to +ve and -ve terminals. But I could also get the same range of voltage, 0V to 30V, when I have one lead connected to the +ve and the other one to the ground. Is then the ground also a '-ve' terminal because there should be something which is pumping electrons into +ve terminal?
I hope you can see my confusions and I do hope you would be able to help me out to clear them. Thanks a lot.
Regards
PG