i am trying to figure out how ohms law will change in regards to voltage in a series, does it affect the resistance. for example. if i have a source voltage of X and the voltage drops at a (LED) to Y. I have a current value of Z amps. How would I figure out the value of resistor at LED To achieve my Z amps. Do I have to take in affect that there was a change in voltage at the LED.
R=V/I
R= V (would i need to figure out the difference of X and Y by subtracting or just use Y value if that is where i need to find the resistance) divided by I (Z amps)
R=V/I
R= V (would i need to figure out the difference of X and Y by subtracting or just use Y value if that is where i need to find the resistance) divided by I (Z amps)