Предмет: Физика, автор: EvgeniyaLittle

Нихромовый провод, сопротивление которого равно 30 Ом, имеет длину 6 м. Определить диаметр провода.

Ответы

Автор ответа: toft1

ρ = 1,1 Ом мм² м⁻¹ удельное сопротивление нихрома
R = ρL/S = 4ρL/пd²
d² = 4ρL/пR
d = √(4ρL/пR) = √(4*1.1*6/3.14159*30) = √0.2801 = 0.53 мм

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