Предмет: Физика, автор: eurosetka200914

Чему равно сопротивление проволоки длиной 15м , площадью поперечного сечения 2 мм2 ? Удельное сопротивление материала 0,016 (Ом × мм2)/ м.

Ответы

Автор ответа: kirills1

R = p * L / S

p - удельное электрическое сопротивление ( 0,016 Ом * мм² / м )
L - длина провода ( 15 м )
S - площадь поперечного сечения ( 2 мм² )

R = 0,016 * 15 / 2 = 0,24 / 2 = 0,12 Ом

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