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流过R1的电流是R2的N倍,R1消耗的功率是R2的N^2倍 流过R1的电流是R2的1/N,R1消耗的功率是R2的1/N 流过R1的电流与R2的相同,R1消耗的功率是R2的1/N^2 流过R1的电流与R2的相同,R1消耗的功率是R2的N倍
r1>1,r2>1 r1>1,r2<1 r1<1,r2>1 r1=0,r2=0
I1 =R1 I/(R1 +R2 ) I1 =R2 I/(R1 +R2 ) I1 =R1 I/(R1 ×R2 ) I1 =(R1 +R2 ) I/R1
b1=b2 tr1=tr2 b1>b2 tb1=tr1 tb1=tb2
R1两端的电压是R2的N倍,R1消耗的功率是R2的N倍 R1两端的电压是R2的1/N,R1消耗的功率是R2的1/N^2 R1两端的电压与R2的相同,R1消耗的功率是R2的1/N R1两端的电压与R2的相同,R1消耗的功率是R2的N^2倍
r1>1,r2<1 r1=1,r2>1 r1<1,r2<1 r1·r2→0
(r2+n2r2)-(r1+n1r1) [(r2-t2)+n2t2]-[(r1-t1)+n1t1] (r2-n2t2)-(r1-n1t1) n2t2-n1t1
b1=b2 tb1=tb2 tr1=tr2 两样本决定系数相等 以上均不对
(r2+n2t2)-(r1+n1t1) [(r2+(n2-1)t2]-[r1+(n1-1)t1] (r2-n2t2)-(r1-n1t1) n2t2-n1t1
R1两端的电压与R2的相同,R1消耗的功率是R2的1/N R1两端的电压与R2的相同,R1消耗的功率是R2的N^2倍 R1两端的电压是R2的1/N,R1消耗的功率是R2的1/N^2 R1两端的电压是R2的N倍,R1消耗的功率是R2的N^2倍
(r2+n2t2)-(r1+n1t1) [(r2+(n2-1)t2]-[r1+(n1-1)t1] (r2-n2t2)-(r1-n1t1) n2t2-n1t1
(r2+n2t2)-(r1+n1t1) [(r2+(n2-1)t2]-[r1+(n1-1)t1] (r2-n2t2)-(r1-n1t1) n2t2-n1t1
b1=b2 b1>b2 两样本回归系数等价 两样本决定系数相等 以上都不对