如图所示,L是一个带铁芯的线圈,R为纯电阻,两条支路直流电阻阻值相等,那么在接通和断开电键的瞬间,电流表的读数大小关系是( )
A.I1<I2I1′>I2′ | B.I1<I2I1′=I2′ |
C.I1>I2I1′=I2′ | D.I1=I2I1′<I2′ |
如图所示,L是一个带铁芯的线圈,R为纯电阻,两条支路直流电阻阻值相等,那么在接通和断开电键的瞬间,电流表的读数大小关系是( )
A.I1<I2I1′>I2′ | B.I1<I2I1′=I2′ |
C.I1>I2I1′=I2′ | D.I1=I2I1′<I2′ |