Scruffy Posted November 20, 2012 Report Share Posted November 20, 2012 I've read and read about all I can find on resistors and yet I'm still confused about one thing - does a resistor in series affect just the voltage or both the voltage and current? I drew a simple circuit showing the input voltage as 12VDC, with one resistor in series and then the output. What I really want to know is how the resistor in this circuit will affect the voltage and the current at the output. Thank you. Quote Link to comment Share on other sites More sharing options...
Falcon1 Posted December 8, 2012 Report Share Posted December 8, 2012 Hi, Resistors affect BOTH current and voltage. Do not over think this, Ohm's law is the key. E = I x Rwith this basic equation you can't go wrong. In series the voltage drop is different for each value of resistance with current remaining constant. In parallel the voltage is tha same to all branches but the current varies. hope this helps. Quote Link to comment Share on other sites More sharing options...
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