Question

Giúp em vs cần gấpp!!!!

Answer 1

\(MCD:R1//R2\)

\(\Rightarrow R=\dfrac{R1\cdot R2}{R1+R2}=\dfrac{15\cdot10}{15+10}=6\Omega\)

Ta có: \(U=U1=U2=18V\Rightarrow\left[{}\begin{matrix}I1=\dfrac{U1}{R1}=\dfrac{18}{15}=1,2A\\I2=\dfrac{U2}{R2}=\dfrac{18}{10}=1,8A\end{matrix}\right.\)