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AP Physics 2
11.6 Kirchhoff’s Loop Rule
11.5 Compound Direct Current (DC) Circuits
11.3 Resistance, Resistivity, and Ohm’s Law
AdvancedMCQMathematicalConceptual25.3k
Three load circuits connected to a real battery with internal resistance.
Three load circuits connected to a real battery with internal resistance.
A real battery with electromotive force (EMF) \(\mathcal{E}\) and non-negligible internal resistance \(r\) is connected in turn to three different load circuits composed of identical resistors, each with resistance \(R\):

  • Circuit 1: A single resistor of resistance \(R\).
  • Circuit 2: Two resistors of resistance \(R\) connected in series.
  • Circuit 3: Two resistors of resistance \(R\) connected in parallel.

Which of the following correctly ranks the potential difference across the battery's terminals, \(V_{\text{term}}\), for the three circuits?

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