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Опір. Питомий опір.

Перевірка знань з даної теми

Пристрй змінного опору, призначенний для регулювання сили струму електричному колі. Реостат
Опір позначається буквою R
Одиниця вимірювання опору Ом
Опір провідника залежить від довжини провідника, площі та речовини, з якої виготовлений провідник
Фізична величина, яка характеризує електричні властивості даної речовини Питомий опір
Одиниця питомого опору в СІ Ом *м
Питомий опір позначається буквою р
Якщо опір збільшується , то сила струму зменшується
Якщо опір зменшується , то сила струму збільшується
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