Ohm's Law relates the voltage across something like a metal wire to the current through it.
Voltage V = current I times resistance R, where the units are Volts, Amps and Ohms. The symbol for ohm is a capital omega Ω , which I can't type directly on my US keyboard.The symbol for volts is V and amps, A.
It's only true for linear devices, like metal wires that don't get too hot. It's not true for semiconductors.
V=Voltage in Volts
I=Current in Amps
R=Reisistance in Ohms, generally the Omega symbol is used
V=IR
Voltage equals Current multiplied by Resistance
Ohm's law says that in an electrical circuit, the current passing through a resistor between two points, is related to the voltage difference between the two points, and inversely related to the electrical resistance between the two points.
G.S.Ohm stated, " The current in a circuit is proportional to the applied potential difference and inversely proportional to the resistance of the circuit".
That is I = V/R.
Current = I. (Amps).
Potential difference = V. (Volts).
Resistance = R or omega sign (ohms).
I have a good and detailed site for you! It explains to you in detail and is good for beginners. I learned several stuff here.
It has tons of stuff explained and to answer a lot of your questions.
http://iamechatronics.com/notes/lessons-...
what are the symbols and units
