In Figure the ideal batteries have emf s ?₁ = 20.0 V, ?_2?= 10.0 V, ?₃ = 5.00 V and ?₄ = 5.00 V and the resistances are each 2.00?. What are the

(a) Size and

(b) Direction (left or right) of current i₁ and the

(c) Size and

(d) Direction of current i₂? (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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