(1)用导线连接BC,测出A、B间的电阻x;
(2)用导线连接AB,测出B、C间的电阻y;
(3)用导线连接AC,测出B、C间的电阻z;则有
1 |
x |
1 |
R1 |
1 |
R2 |
1 |
y |
1 |
R3 |
1 |
R2 |
1 |
z |
1 |
R1 |
1 |
R3 |
解之得出R1=
2xyz |
xy+yz−xz |
2xyz |
xz+yz−xy |
2xyz |
xy+xz−yz |
故答案为:R1=
2xyz |
xy+yz−xz |
2xyz |
xz+yz−xy |
2xyz |
xy+xz−yz |
1 |
x |
1 |
R1 |
1 |
R2 |
1 |
y |
1 |
R3 |
1 |
R2 |
1 |
z |
1 |
R1 |
1 |
R3 |
2xyz |
xy+yz−xz |
2xyz |
xz+yz−xy |
2xyz |
xy+xz−yz |
2xyz |
xy+yz−xz |
2xyz |
xz+yz−xy |
2xyz |
xy+xz−yz |