Question

Mn giúp em với ạ

Answer 1

\(=>S1=2S2\)

\(=>\dfrac{R1}{R2}=\dfrac{S2}{S1}=\dfrac{S2}{2S2}=\dfrac{1}{2}=>R1=\dfrac{1}{2}R2\)=>điện trở R2 lớn hơn R1

b,\(=>R2-R1=5\Omega\)

\(=>R2-\dfrac{1}{2}R2=5=>R2=10\Omega=>R1=\dfrac{1}{2}.10=5\Omega\)