摘要:D.电流表A2的示数为0.4A
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如图所示,电流表A1、A2、A3读数分别为0.3A、0.4A、0.6A,则通过电阻R1、R2、R3的电流各是(电流表内阻不计)( )
A.0.2A,0.1A,0.3A
B.0.3A,0.1A,0.2A
C.0.3A,0.2A,0.1A
D.0.2A,0.3A,0.1A
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如图所示,电流表A1、A2、A3读数分别为0.3A、0.4A、0.6A,则通过电阻R1、R2、R3的电流各是(电流表内阻不计)( )
A.0.2A,0.1A,0.3A
B.0.3A,0.1A,0.2A
C.0.3A,0.2A,0.1A
D.0.2A,0.3A,0.1A
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如图所示,A、B两点接在恒压电源上,内阻不可忽略的电流表A1与A2并联,示数分别为0.8A和1.6A,若将两只电流表串联起来接入原电路中,两只电流表的示数均为1A,那么电路不接入电流表时,流过R的电流是
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A.2.4A
B.3A
C.4A
D.4.8A
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B.3A
C.4A
D.4.8A