In Fig. 27-69, Rl = 20.0 n, R2 = 10.0 n, and the ideal
Chapter 27, Problem 71(choose chapter or problem)
In Fig. 27-69, Rl = 20.0 n, R2 = 10.0 n, and the ideal battery has emf 18 = 120 V. What is the current at point a if we close (a) only switch SI> (b) only switches SI and Sz, and ( c) all three switches?
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