In Fig. 27-50, two batteries with an emf V and an internal resistance r 0.300 are
Chapter 27, Problem 39(choose chapter or problem)
In Fig. 27-50, two batteries with an emf V and an internal resistance r 0.300 are connected in parallel across a resistance R. (a) For what value of R is the dissipation rate in the resistor a maximum? (b) What is that maximum? + rrR Figure 27-50 39 and 40.
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