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lizedomoy
@lizedomoy
July 2022
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Определите площадь поперечного сечения железной проволки длинной 200м, если её сопротивление равно 40 Ом? Удельное сопротивление железа 0,1 Ом *мм2/м
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R = pl/s
S = pl/R = 0,1 Ом * мм²/м * 200 м / 40 Ом = 0,5 мм²
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Answers & Comments
S = pl/R = 0,1 Ом * мм²/м * 200 м / 40 Ом = 0,5 мм²