I am still trying to understand ohms law, which looked simple at first, and it probably is simple, but when i look at charts that have the laws for resistance voltage wattage and current, I get confused, because often times you are given 2 variables, how do you get all four? My main question is what voltage would I need to power 2 12v electromagnet, would i need a 12v psu or 24v, or something in between?
Thanks
Give us an idea of the electromagnets you are powering.
It realy depends on the magnets, but it could be either way.
as for OHM's law It's not bad, If you have any 2 given points, you can find the other 1.
Watts is a combination of Amps*voltage. And so If you have resistance, and voltage, you can find out how many amps you use.
That will tell you the size of PSU you will need, or if you will need 2.
In the blue(amps*resistance=volts)
In green (volts\amps=resistance)
In yellow (volts\resistance=amps)
watts= amps*volts.
Give us an idea of the electromagnets you are powering.
It realy depends on the magnets, but it could be either way.
as for OHM's law It's not bad, If you have any 2 given points, you can find the other 1.
Watts is a combination of Amps*voltage. And so If you have resistance, and voltage, you can find out how many amps you use.
That will tell you the size of PSU you will need, or if you will need 2.
In the blue(amps*resistance=volts)
In green (volts\amps=resistance)
In yellow (volts\resistance=amps)
watts= amps*volts.
