Question

Cho đề bài như sau

Answer 1

Giải giúp mình với,  mình xin cảm ơn ạ 

Answer 2

\(=>R7//\left\{R1ntR6nt\left[R5//\left(R2ntR3ntR4\right)\right]\right\}\)

\(=>Rtd=\dfrac{R7.\left[R1+R6+\dfrac{\left(R2+R3+R4\right)R5}{R2+R3+R4+R5}\right]}{R7+R1+R6+\dfrac{\left(R2+R3+R4\right)R5}{R2+R3+R4+R5}}\)

\(=\dfrac{24\left[8+12+\dfrac{\left(3+5+4\right).6}{3+4+5+6}\right]}{24+8+12+\dfrac{\left(3+5+4\right)6}{3+4+5+6}}=12\left(om\right)\)

\(=>U=Ỉ.Rtd=1.12=12V\)

\(=>U=U123456=12V\)

\(=>I123456=\dfrac{U123456}{R123456}=\dfrac{12}{8+12+\dfrac{\left(3+5+4\right).6}{3+4+5+6}}=\dfrac{1}{2}A=I2345\)

\(=>U2345=I2345.R2345=\dfrac{1}{2}.\dfrac{\left(3+5+4\right)6}{3+4+5+6}=2V=U234\)

\(=>I234=\dfrac{U234}{R234}=\dfrac{2}{3+4+5}=\dfrac{1}{6}A=I3=>U3=\dfrac{1}{6}.5=\dfrac{5}{6}V\)