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Відповідь:
В 3,24 раза проводник из вольфрама имеет большее сопротивление.
Пояснення:
Сопротивление проводника расчитывается по формуле:
R = p × L / S,
где:
L - длина проводника, м;
S - площадь, поперечного сечения проводника мм^2;
р - удельное сопротивление материала проводника, Ом × мм^2 / м.
р1 ( меди ) = 0,017 Ом × мм^2 / м.
р2 ( вольфрама ) = 0,055 Ом × мм^2 / м.
Поскольку оба проводника одинаковой длины и площади поперечного сечения, то необходимо сравнить между собой удельные сопротивления двух металов.
В 0,055 / 0,017 = 3,24 раза проводник из вольфрама имеет большее сопротивление.
Объяснение:
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