A.0.50 V | B.0.75 V | C.1.0V | D.1.5 V |
A.V和A的示数都增大 | B.V和A的示数都减小 |
C.V示数增大、A示数减小 | D.V示数减小、A示数增大 |
A.电压表的读数减少,小灯L变亮 |
B.电压表的读数减少,小灯L变暗 |
C.电压表的读数增大,小灯L变亮 |
D.电压表的读数增大,小灯L变暗 |
A.0.24J | B.0.25J |
C.0.26J | D.0.28J |
A.I=1.5A |
B.I<1.5A |
C.P>15W |
D.P热=10W |
A.将R1、R2串联后接到电源两端 |
B.将R1、R2并联后接到电源两端 |
C.将R1单独接到电源两端 |
D.将R2单独接到电源两端 |
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