Tóm tắt
R1 = 5Ω
R2=10Ω
U=12 V
a, Rtđ = ?
b, I = ?
Giải
a, Rtđ = R1 + R2 = 5 + 10 = 15 Ω
b, ADCT :
I =\(\dfrac{U}{R}\)
I= \(\dfrac{12}{15}\)
I= 0,8 ( A)
\(R_{tđ} = R_1 + R_2= 5 + 10= 15\)Ω
b)
\(I=\dfrac{U}{R}= \dfrac{12}{15}=0,8 A\)
\(I=I_1=I_2= 0,8A\)