A.7.5V | B.8V | C.2
| D.3
|
2 |
(3
| ||
R |
1 |
3 |
92 |
R |
2 |
3 |
U2 |
R |
15 |
A.周期是0.01S |
B.最大值是311V |
C.有效值是220V |
D.表达式为U=220sin100πt(V) |
A.原线圈的输入电压与副线圈的输出电压之比为5:11 |
B.原线圈的输入电流与副线圈的输出电流之比为5:11 |
C.该交流电的周期为3×10-2s |
D.流过电阻的电流是10 A |
A.5V | B.5
| C.10V | D.10
|
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