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A constant voltage V = 25 V is maintaine...

A constant voltage `V = 25 V` is maintained between points `A` and `B` of the circuit (Fig). Find the magnitude and direction of the current flowing through the segment `CD` if the resistances are equal to `R_(1) = 1.0 Omega, R_(2) = 2.0 Omega, R_(3) = 3.0 Omega` and `R_(4) = 4.0 Omega`.

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`1A`
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