In Fig. 27-69, R1 20.0 , R2 10.0 , and the ideal battery has emf 120 V. What is the
Chapter 27, Problem 71(choose chapter or problem)
In Fig. 27-69, R1 20.0 , R2 10.0 , and the ideal battery has emf 120 V. What is the current at point a if we close (a) only switch S1, (b) only switches S1 and S2, and (c) all three switches? a S1 S2 S3R1 R1 R1R1 R2 R2 Figure 27-69 71.
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