| ||
R |
T |
3 |
| ||
R |
2T |
3 |
U2 |
R |
2 |
2 |
A.110V | B.110
| C.220V | D.220
|
A.I有=3
| B.I有=3A,Im=3
| ||||||
C.I有=
| D.I有=3
|
A.频率 | B.电压 | C.电流 | D.电功率 |
A.周期为0.02s |
B.有效值为200V |
C.将该交流电压加在一个5Ω定值电阻两端,1分钟的发热量为600000J |
D.将该交流电压加在起辉电压为150V的氖管上,氖管未被击穿,氖管1分钟发光次数为60次 |
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