Предмет: Физика, автор: qwerty1979

Определить общее сопротивление цепи, токи по ветвям, если: R 1 =R 4 =4 Ом R 2 =R 3 =8 Ом E=120 В

Приложения:

fatt52: Схему хотя бы прикрепи...
Ярешутебя: не понятно как они соеденены
Ярешутебя: У тебя полная цепь и тебе надо найти только Rо, типо Rо= R14+R23?
Ярешутебя: E очень сильно настораживает.
qwerty1979: вот что задали
fatt52: Е для нахождения токов.
Ярешутебя: а токи
Ярешутебя: сила тока?
Ярешутебя: сейчас допишу
Ярешутебя: Вот, дописал

Ответы

Автор ответа: Ярешутебя
1

Ответ:

Rо=6 Ом

Токи (I)=17 А

Объяснение:

Смотри, я если не ошибаюсь, то тут надо искать чисто по R, и E мы не трогаем. Тогда раз R1-R4 параллельно подсоеденены, и R2-R3 тоже, найдем R14 и R23,тогда по формуле 1/R14=R1+R4/R1*R4: R14=R1*R4/R1+R4=16/8=2

R23=R2*R3/R2+R3=4

Тогда Rо=R14+R23=2+4=6 Oм

Конечный рисунок: Er--Р--Р--Er

Р-резистор

I=E/r14+r23= 100/6= примерно 17, I1=I2 , т.к мы сделали последовательное соеденение. Вроде так.

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