\(R1nt\left(R2//Rx\right)\)
\(\Rightarrow Rab=14=R1+\dfrac{R2.Rx}{R2+Rx}\Rightarrow14=6,8+\dfrac{12.Rx}{12+Rx}\Rightarrow Rx=18\Omega\)
Đúng 1
Bình luận (0)