A.24W | B.34W | C.36W | D.72W |
3 |
2 |
1 |
3 |
U2 |
R |
36 |
9 |
| ||
R |
42 |
4 |
P总 |
U1 |
A.5A,250V,50kW | B.5A、10kV,50kW |
C.200A,250V,50kW | D.200A,10kV,2×103kW |
A. | B. | C. | D. |
A.1:2 2U | B.1:2 4 U | C.2:1 4 U | D.2:1 2 U |
2 |
A.通过电阻的电流是22A |
B.交流电的频率是100Hz |
C.与电阻并联的电压表的示数是100V |
D.变压器的输入功率是484W |
2 |
A.副线圈交变电流的频率是100πHz | ||
B.电压表的示数为4
| ||
C.电流表A的示数为0.5A | ||
D.变压器的输入功率为2W |
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