Đáp án:
`R_{123}=359,54 \ Omega`
`R_{456}=106,58 \ Omega`
Giải:
Sđmđ: (R1 // R2) nt R3
`R_{12}=\frac{R_1R_2}{R_1+R_2}=\frac{472.562}{472+562}=256,54 \ (\Omega)`
`R_{123}=R_{12}+R_3=256,54+103=359,54 \ (\Omega)`
Sđmđ: (R4 nt R5) // R6
`R_{45}=R_4+R_5=102+103=205 \ (\Omega)`
`R_{456}=\frac{R_{45}.R_6}{R_{45}+R_6}=\frac{205.222}{205+222}=106,58 \ (\Omega)`