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Resistance problem

  1. Jan 28, 2004 #1
    Problem 27.
    Two resistors, A and B, are connected in series to
    a 12 V battery. A voltmeter
    connected across resistor A measures a potential
    difference of 6.7 V. When the two resistors are connected in parallel
    across the 12 V battery, the current in B is found to be 1.6 A.
    Find the resistance of A.

    On problem 28 how does it get solve? I'm stumped.
  2. jcsd
  3. Jan 28, 2004 #2
    Here's a hint: when resistors are connected in parallel, the voltage measured across any one resistor will equal the source voltage. In this case, 12V.
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