A.L1变亮,L2变暗 | B.L1变暗,L2变亮 |
C.L1和L2亮度不变 | D.L1亮度不变,L2变暗 |
U2 |
R |
A.电流表的示数增大,电压表的示数减小 |
B.电流表的示数变小,电压表的示数变大 |
C.电流表的示数增大,电压表的示数变大 |
D.电流表的示数变小,电压表的示数变小 |
A.6V~0V | B.3.6V~6V | C.6V~3.6V | D.6V~2.4V |
A.I2=nI1 | B.I=(n+1)I2 | C.I1=
| D.I2=
|
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