R2R3 |
R2+R3 |
6×12 |
6+12 |
6E0 |
6r0+R |
6×1.5 |
6×0.1+8.4 |
| ||
R2 |
PmR2 |
3×6 |
2 |
Um |
R2 |
3
| ||
6 |
| ||
2 |
6E0-Um |
6r+R1 |
9-3
| ||
0.6+4.4 |
Um |
I3 |
3
| ||
0.25 |
A.EA>EBB |
B.rA>rB |
C.电流都为I0时,它们的内压降相等 |
D.路端电压都为U0时,它们的输出功率相等. |
A.灯L1、L2变亮,灯L3变暗 | B.灯L2、L3变亮,灯L1变暗 |
C.灯L1、L3变亮,灯L2变暗 | D.灯L1变亮,灯L2、L3变暗 |
A.AB两点间的电压U增大 |
B.AB两点间的电压U减小 |
C.通过R的电流强度I增大 |
D.通过R2的电流强度I减小 |
A. | B. | C. | D. |
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