[tex]R_{общ} = R_{12} + R_{34} = \frac{R_{1}R_{2} }{R_{1} + R_{2} } + \frac{R_{3}R_{4} }{R_{3} + R_{4} }[/tex]
[tex]R_{общ} = \frac{2 \times 2}{2 + 2} + \frac{4 \times 4}{4 + 4} = 1 + 2 = 3 \: Ом[/tex]
ответ: 3 Ома
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[tex]R_{общ} = R_{12} + R_{34} = \frac{R_{1}R_{2} }{R_{1} + R_{2} } + \frac{R_{3}R_{4} }{R_{3} + R_{4} }[/tex]
[tex]R_{общ} = \frac{2 \times 2}{2 + 2} + \frac{4 \times 4}{4 + 4} = 1 + 2 = 3 \: Ом[/tex]
ответ: 3 Ома