A.a代表的电阻丝较粗 |
B.b代表的电阻线较粗 |
C.RA>RB |
D.RA<RB |
A.电动势Ea>Eb,短路电流Ia>Ib |
B.电动势Ea=Eb,短路电流Ia<Ib |
C.电动势Ea=Eb,内电阻ra<rb |
D.电动势Ea>Eb,内电阻ra>rb |
A.电势能减小 | B.电势能不变 |
C.偏离直线向上偏转 | D.偏离直线向下偏转 |
A.电源电动势为2.0 V |
B.电源内阻为Ω |
C.电源短路时电流为10A |
D.电路路端电压为1.5 V时,电路中电流为5.0 A |
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