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  1. K

    Circuit sum query

    Here's the Image sorry!
  2. K

    Circuit sum query

    On the attached image of a circuit I was given a sum in the exam as follows, but I can't make sense of it: The circuit has an EMF of 12V and an internal resistance of 5ohms. Q1) Total resistance of the circuit A) 50(45+5) I don't get why they add 5 since that's the internal resistance...
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