Voltage across a resistor connected to a voltage source

Discussion in 'Physics' started by shespuzzling, Jan 4, 2010.

  1. shespuzzling

    Thread Starter Active Member

    Aug 13, 2009
    88
    0
    If a resistor is connected to a voltage source, it will display the same voltage as the source does with the same polarity. Since these voltages are essentially equal and opposite, how is current able to flow at all?

    Also, does the voltage displayed across the resistor have anything to do with back-emf? If the source was AC, then current is indeed changing and so is the magnetic field so wouldn't a back-emf be generated?

    Thanks for your help!
     
  2. shespuzzling

    Thread Starter Active Member

    Aug 13, 2009
    88
    0
    Eek, nevermind. I think I just figured it out.
     
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