A.P1=P2 | B.P1=2P2 | C.P1=3P2 | D.P1=4P2 |
U |
R |
U |
I |
R1 |
R2 |
| ||
|
I2 |
I1 |
I2 |
4I2 |
1 |
4 |
P1 |
P2 |
| ||
|
R2 |
R1 |
4 |
1 |
A.Pa=Pd=Pb | B.Pa>Pd>Pb | C.Pa=Pd>Pb | D.Pa<Pd=Pb |
A.与输电电流成反比,与输电线的电阻成正比 |
B.与输电电流成正比,与输电线的电阻成反比 |
C.与输电电流的平方成正比,与输电线的电阻成正比 |
D.与输电电流平方成正比,与输电线的电阻成反比 |
A.等于1000W | B.大于1000W | C.小于1000W | D.无法确定 |
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