Предмет: Физика, автор: kolosovdima896

У електричне коло послідовно під'єднані два резистори з опором 6 ом та 2 ом напруга на першому показує 18 в яка сила струму в колі та яка напруга на другому резисторі? Виконайте малюнок до задачі​

Ответы

Автор ответа: orakivska
0

За законом Ома, струм в колі (I) можна знайти, використовуючи формулу:

I = V / R_eq,

де V - напруга в колі, а R_eq - еквівалентний опір кола. Для двох резисторів, що під'єднані послідовно, еквівалентний опір кола обчислюється як сума опорів:

R_eq = R_1 + R_2,

де R_1 та R_2 - опори першого та другого резисторів відповідно.

Отже, в нашому випадку:

R_1 = 6 Ом

R_2 = 2 Ом

V = 18 В

R_eq = R_1 + R_2 = 6 Ом + 2 Ом = 8 Ом

I = V / R_eq = 18 В / 8 Ом = 2.25 А

Тепер, для знаходження напруги на другому резисторі можна використати знову закон Ома:

V_2 = I * R_2 = 2.25 А * 2 Ом = 4.5 В

Отже, сила струму в колі дорівнює 2.25 А, а напруга на другому резисторі - 4.5 В.

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