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Electric Circuits Problem help asap

  1. May 2, 2005 #1
    Diagram
    The answer is A and i dont really understand why that is so. I am thinking that since Emf - Ir= Vterminal. The current must go up but i am not sure exactly why is that happening. I've read through my handbook but can't seem to find anything on this type of problem.
     
  2. jcsd
  3. May 2, 2005 #2
    see when the resistance is added in parallel to the 4{}| the the equvalent resistance goes down due to which the current increases and voltage across the 5{} is given by
    I*R,THEREFORE THE VOLTAGE ACROSS IT ALSO INCREASES.
     
  4. May 2, 2005 #3
    I agree that. BUt why terminal voltage decreases?
     
  5. May 2, 2005 #4
    terminal voltage is the voltage across the battery when it is connected in a circuit,as the current increases the terminal voltage which is equal to=E-IR decreases,here the R stands for internal resistance of the battery
     
  6. Jun 24, 2005 #5
    Thanks for your help
     
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