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Homework Help: Voltage across resistor

  1. Feb 14, 2010 #1
    1. If I know the voltages on both immediate sides of a resistor...lets say v1 is on voltage on left side of resistor, and v2 is voltage on the right side of the resistor, is the votage of the resistor = v2 - v1 if the positive side of resistor is to the right? Or can you not even calclulate the voltage of a resistor just based on the two voltages on either side of it.



    2. Voltage drop equals voltage on resistor? i know v = i*r but i dont know value of i.



    3. i have calculated v1 and v2 i just need to know if vx is equal to v2-v1
     
  2. jcsd
  3. Feb 14, 2010 #2

    rl.bhat

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    Homework Helper

    i have calculated v1 and v2 i just need to know if vx is equal to v2-v1
    Please show your calculations and post the text of the problem.
     
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