Предмет: Физика, автор: artemkaklass39

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Чтобы изготовить реостат с максимальным сопротивлением 100 Ом мальчик взял никелиновую проволоку сечением 0,2 мм^2. Удельное сопротивление никелина 0,4 (Ом*мм^2)/м. Какой длины проволока ему понадобиться для этого? Ответ запишите в виде числа БЕЗ единиц измерения.

Ответы

Автор ответа: DedStar

Ответ:

Объяснение:

L = R·S / ρ = 100·0,2 / 0,4 = 50 м

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