Miumiumiu Miumiumiumiu

2 năm trước

giúp mk bài này với ạ Cho R1=3 ôm ,R2=6 ôm mắc song song a, tính Rtđ b, mắc thêm R3=2 ôm song song với R2 . tính Rtđ

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songuyen05

2 năm trước

Đáp án:

Giải thích các bước giải:

a. R1 // R2 nên

Rtd = (R1.R2)/(R1 + R2) = (3.6)/(3 + 6) = 18/9 = 2 ôm.

b. Khi mắc R3 song song với R2 thì nó cũng song song với R1. Do đó:

1/Rtd' = 1/R1 + 1/R2 + 1/R3 = 1/3 + 1/6 + 1/2 = 1

Suy ra: Rtd' = 1 ôm

Trương Thị Lan Anh

2 năm trước

a) 1/ rtd = 1/ r1 + 1/ r2 ( do mắc song song )

bạn tự thay số nhé => rtd = 2

b) r3= 3 // r2

1/ r td = 1/ r1+ 1/r2+ 1/ r3

thay số ta tính dc rtd = 1

sai thôi hihi

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Choose the best answer.
I think you should buy ___ pack of mineral water instead. And you can also buy _ snacks such as potato crisps, 3 kilos of mandarins, 2 kilos of apples, 3 bunches of bananas, ____ cookies and soft candies.

Choose the best answer.
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Choose the best answer.
I think that ______ cauliflower is not enough for 3 people. Let’s buy one more.

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giúp mk bài này với ạ Cho R1=3 ôm ,R2=6 ôm mắc song song a, tính Rtđ b, mắc thêm R3=2 ôm song song với R2 . tính Rtđ

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Choose the best answer.We should decorate our living room with _____ orange banner. We also need ________ ribbons, balloons, party hats and costume.

Choose the best answer.I think that ______ cauliflower is not enough for 3 people. Let’s buy one more.

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