串联电路:I1=I2,U=U1+U2,R=R1+R2,U1:U2=R1:R2,W=W1+W2,W1:W2=R1:R2,p=P1+P2,P1:P2=R1:R2,Q1:Q2:Q3=R1:R2:R3
并联电路:I=I1+I2,U=U1=U2,I1:I2=R2:R1,1/R=1/R1+1/R2,W=W1+W2,W1:W2=R2:R1,p=P1+P2,P1:P2=R2:R1,Q1:Q2:Q3=1/R1:1/R2:1/R3
串联电路:I1=I2,U=U1+U2,R=R1+R2,U1:U2=R1:R2,W=W1+W2,W1:W2=R1:R2,p=P1+P2,P1:P2=R1:R2,Q1:Q2:Q3=R1:R2:R3
并联电路:I=I1+I2,U=U1=U2,I1:I2=R2:R1,1/R=1/R1+1/R2,W=W1+W2,W1:W2=R2:R1,p=P1+P2,P1:P2=R2:R1,Q1:Q2:Q3=1/R1:1/R2:1/R3