cac ban nhu do dien y
Cho mach dien co so do nhu hinh ve trong do cac dien tro R1 = 14Ω , R2 = 14Ω , R3 = 24Ω dong dien di qua R1 co cuong do la I1 = 0,4A
a) Tinh cac cuong do dong dien I2 , I3 tuong ung di qua cac dien tro R2 , R3
b) Tinh cac hieu dien the UAC ; UCB va UAB
a) \(R_1nt(R_2//R_3)\)
\(R_1=\dfrac{U_1}{I_1}\Rightarrow U_1=0,4.14=5,6\left(V\right)\)
\(I_1=I_{AB}=0,4A\)
Có \(R_{AB}=R_1+R_{23}=14+\dfrac{R_2.R_3}{R_2+R_3}=\dfrac{434}{19}\left(\Omega\right)\)
\(\Rightarrow U_1+U_{23}=U_{AB}=R_{AB}.I_{AB}=\dfrac{439}{19}.0,4=\dfrac{868}{95}\left(V\right)\)
\(\Rightarrow U_{23}=\dfrac{868}{95}-5,6=\dfrac{336}{95}\left(V\right)\)
\(\Rightarrow U_2=U_3=\dfrac{336}{95}\left(V\right)\)
\(I_2=\dfrac{U_2}{R_2}=\dfrac{24}{95}\left(A\right)\)
\(I_3=\dfrac{U_3}{R_3}=\dfrac{14}{95}\left(V\right)\)
b) \(U_{AB}=\dfrac{868}{95}\left(V\right)\)
\(U_{AC}=I_1.R_1=0,4.14=5,6\left(V\right)\)
\(U_{CB}=I_{23}.R_{23}=0,4.\dfrac{R_2.R_3}{R_2+R_3}=\dfrac{336}{95}\left(V\right)\)
Vậy...
trong buoi dong dien the duc cac ban hoc sinh xep thanh cac hang nhu nhau biet 4 hang co 64 ban hoi 6 hang co bao nhieu ban
1 hang 64/4=16
6 hang 16*6=96
Dung day, minh chac chan. Tick nha
1) Cho mach dien nhu hinh 2.5
Cho biet UAB = 20V, R1 = 2Ω; R2 = 1Ω; R3 = 6Ω; R4 = 4Ω
a) Tinh cuong do dong dien qua cac dien tro khi K mo
b) Tinh cuong do dong dien qua cac dien tro khi K dong va I qua K
cho cac dung cudien gom 1 nguon dien 2 pin,bong den,1 cong tac
a,ve so do mach dien kin voi cong tac dong
b,ve so do mach dien gom nhung dung cu dien nhu tren va mac them 1 Ampe ke do cuong do dong dien chay trong mach dien.
c,ve so do mach dien gom nhung dung cu nhu cau b va mac them 1 von ke do hieu dien the giua hai dau bong den
CAC BAN DUNG LAI DI CO DUOC KHONG ? SAO CAC BAN LAI TU HOI TU TRA LOI CHI VI MUON KIEM LIKE CO CHU . SAO CAC CAU PHAI LAM VAY ? CAC CAU LAM NHU VAY THAT BI OI . MINH KHONG MUON XUC PHAM DEN DANH DU CUA CAC CAU NHUNG CAC CAU LAM NHU VAY LA KHONG DUNG . CAC CAU MA DUNG NHUNG TRO BI OI NHU VAY THI NHUGN NGUOI TRA LOI CHAN CHINH CAC CAU HOI SE NHU THE NAO ? CAC CAU HAY DUNG LAI DI . MINH KHONG MUON GAY ROI TREN DIEN DAN VA MINH CUNG BIET CCAC BAN RAT MUON LIKE NHUNG CAC CAU LAM VAY LA LAM VIEC KHONG TOT MINH PHAI NGAN CHUYEN NAY LAI . MONG CAC CAU HIEU
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bon tui lam vi muon biet ket qua cua bon tui dung hay sai thui. zo zien
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co giao xep cac ban trong lop vao cac ban hoc moi ban 2 ban thi thua 1 ban.co giao de ban do ngoi rieng 1 minh vao ban cuoi cung. nhu vay cac ban da ngoi het vao 12 ban hoc cua lop .vay lop do co so ban la bao nhieu
Lớp đó có số bạn là 25 bạn
tinh dien tich manh dat co kich thuc nhu hinh ve ben
minh khong biet ve hinh nhung minh goi y cac so cho cac ban giai ho minh : manh dat duoc chia than 2 hinh , do la hinh tam giac va hinh binh hanh , hinh tam giac co chieu cao 15 m , hinh banh hanh co day 28 m , canh hinh binh hanh la mot hinh nguoi ta cham cham la 13 m . cau giup minh voi minh se tick cho cac cau
cac ban chia ngang cac hinh ra gium minh nha
1 tinh dien tich manh dat co kich thuoc nhu hinh duoi day
ban Nam lan phep nhan 1 so voi 135 . do so y ban da dat cac tich rieng thang cot voi nhau nhu phep cong nen duoc ket qua la 1944 . Tim tich dung