Question

ai giúp với ạ :<

Answer 1

\(\left\{{}\begin{matrix}R1=\dfrac{U1^2}{P1}=\dfrac{110^2}{1000}=12,1\Omega\\R2=\dfrac{U2^2}{P2}=\dfrac{110^2}{1500}=\dfrac{121}{15}\Omega\end{matrix}\right.\)

\(MCD:R1ntR2\)

\(->R=R1+R2=12,1+\dfrac{121}{15}=\dfrac{121}{6}\Omega\)

\(=>I=I1=I2=\dfrac{U}{R}=\dfrac{220}{\dfrac{121}{6}}=\dfrac{120}{11}A\)

\(=>\left\{{}\begin{matrix}P1=I1^2\cdot R1=\left(\dfrac{120}{11}\right)^2\cdot12,1=1440\\P2=I2^2\cdot R2=\left(\dfrac{120}{11}\right)^2\cdot\dfrac{121}{15}=960\end{matrix}\right.\)(W)