September 2021 0 7 Report
В электрической цепи, представленной на схеме, сопротивления проводника R1=5 Ом. Показания первого и второго вольтметров равны 12 В и 8 В соответственно. Чему равно сопротивление проводника R2? Вольтметры считать идеальными.
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