Answer
The energy transfer rate in battery 1 is $~~6.0~W$
Work Step by Step
We can find the energy transfer rate in battery 1:
$P = i~\mathscr{E}$
$P = (0.50~A)(12.0~V)$
$P = 6.0~W$
The energy transfer rate in battery 1 is $~~6.0~W$
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