(a) In Fig. 27-28, what value must R have if the current

Chapter , Problem 10

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(a) In Fig. 27-28, what value must R have if the current in the circuit is to be 1.0 mA? Take #1 ! 2.0 V, #2 ! 3.0 V, and r1 ! r2 ! 3.0 0. (b) What is the rate at which thermal energy appears in R?+ r2 2 R Figure 27-28 10.

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