In Fig. 27-81, the ideal batteries have emfs #1 ! 20.0 V,
Chapter , Problem 100(choose chapter or problem)
In Fig. 27-81, the ideal batteries have emfs \(\mathscr{E}_{1}=20.0 \mathrm{~V}, \mathscr{E}_{2}=10.0 \mathrm{~V}\),
\(\mathscr{E}_{3}=5.00 \mathrm{~V}\), and \(\mathscr{E}_{4}=5.00 \mathrm{~V}\), and the resistances are each \(2.00 \ \Omega\). What are the
(a) size and
(b) direction (left or right) of current \(i_{1}\) and the
(c) size and
(d) direction of current \(i_{2}\)? (This can be answered with only mental calculation.)
(e) At what rate is energy being transferred in battery 4, and
(f) is the energy being supplied or absorbed by the battery?
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