分流公式:
設R1,R2並聯,透過它們的電流為I1和I2
U1=U2
I1R1=I2R2
I1/I2=R2/R1
I1/(I1+I2)=R2/(R1+R2) I2/(I1+I2)=R1/(R1+R2)
設R1,R2串聯,透過它們的電壓為U1和U2
I1=I2
U1/R1=U2/R2
U1/U2=R1/R2
U1/(U1+U2)=R1/(R1+R2) U2/(U1+U2)=R2/(R1+R2)