Question: What are the battery current I bat and the potential difference V a - V b between points a and b when the switch in

What are the battery current Ibat and the potential difference  Va - Vb between points a and b when the switch in FIGURE P28.55  is 

24 V FIGURE P28.55

(a) Open 

(b) Closed?

24 V FIGURE P28.55

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