在图示的电路中,I s1 =3A,I s2 =6A。当电流源I s1 单独作用时,流过R=1Ω电阻的电流I=1A,则流过电阻R的实际电流I值为:() https://assets.asklib.com/psource/2015102715475366965.jpg
图示电路中,电流I的值为 。http://image.zhihuishu.com/zhs/onlineexam/ueditor/201811/6b38e52e73414a3aa87d4c2f935fe974.png
图示电路已知电流源的电压为6V,则其电流i为 。http://image.zhihuishu.com/zhs/onlineexam/ueditor/201901/654edc060b3f4bdfbf9cebb3ec293baa.png
图a所示电路中,L=4H,且i(0_)=0,电压波形如图b所示,则当t=3S时,电感电流i为( )http://image.zhihuishu.com/zhs/onlineexam/ueditor/201811/3d7d3ba5cc7f415cbad73688e96d6027.png
图所示电路中,I、U、E的参考方向已经给出,请写出电路中端口电压U与电流I的关系表达式。http://image.zhihuishu.com/zhs/onlineexam/ueditor/201811/3735006781d841409e8e11ef85378dfc.png
图示应力状态的主应力σ1,σ2,σ3和最大切应力τmax的值为( )(应力单位:MPa)。http://image.zhihuishu.com/zhs/onlineexam/ueditor/201808/a141a5fb7f7c418dbbe8ba91e4c2b818.png
图示电路中,电流I3为( )。http://image.zhihuishu.com/zhs/onlineexam/ueditor/201902/598ec8a1653b49a2a68f126dabffa852.jpg
图示应力状态的主应力σ1,σ2,σ3和最大切应力τmax的值为( )(应力单位:MPa)。http://image.zhihuishu.com/zhs/onlineexam/ueditor/201808/a141a5fb7f7c418dbbe8ba91e4c2b818.png
电路如图4所示,电流I为。http://image.zhihuishu.com/zhs/onlineexam/ueditor/201804/48dcfd6292e44a329c2d5b04973679d8.png
图7所示电路,若已知电流I=1A ,则 Uab= ( )http://image.zhihuishu.com/zhs/onlineexam/ueditor/201804/51368429af7741c8a3acecb0e789389d.png
在图示电路中,总电流 I = 3 A。若使电流 I1 = 2 A,则电阻R 值为http://image.zhihuishu.com/zhs/onlineexam/ueditor/201803/616c87d904264b3dacf72971a0196ef2.png
在图示电路中,U、I 的关系式正确的是http://image.zhihuishu.com/zhs/onlineexam/ueditor/201803/6381932f2ee041208b9053557ecf69ea.png
已知图示电路中的IS=5A,当US单独作用时,I1=3A,那么当IS、US共同作用时,2W电阻中电流I是http://image.zhihuishu.com/zhs/onlineexam/ueditor/201803/773bce0e27204340ab4833f822ec3b49.png
在下图所示电路中,I = 2 A,若将电流源断开,则电流I为http://image.zhihuishu.com/zhs/onlineexam/ueditor/201803/4aecc3ffbabc4bb49e3927177cb06cf4.png
在图示电路中,电流 I 为http://image.zhihuishu.com/zhs/onlineexam/ueditor/201803/b6e236ea08fe4a69b37f9b9db9d04e12.png
在图示电路中,已知:US =10 V,I1 =-4 A,I2 =1 A。电流 I3 为http://image.zhihuishu.com/zhs/onlineexam/ueditor/201803/cc0f8eced1a6466da6e8693f0f4b3f56.png
在图示电路中,开关S闭合前电路已处于稳态,试问闭合开关瞬间,初始值i L( 0+ )和i (0+ )分别为http://image.zhihuishu.com/zhs/onlineexam/ueditor/201803/2c8e09f6d810444b8eb8e94d638eb946.png
在图示正弦交流电路中,各支路电流有效值为I 1 =1 A,I 2=1 A,I 3 =3 A,则总电流i的有效值I为( )。http://image.zhihuishu.com/zhs/onlineexam/ueditor/201804/a1306357a26747be9ccc8a58c8c59a27.png
图示电路中,电流源发出的功率为( )。http://image.zhihuishu.com/zhs/onlineexam/ueditor/201904/03f3eba91390411681ab003e75ce1795.png
电路如图所示,经过20Ω电阻的电流I( )。http://image.zhihuishu.com/zhs/onlineexam/ueditor/201904/fd6e851cbe644bf593e63915e45f3dbc.png
求图示电路中的电流i1和6Ω电阻上的功率( )http://image.zhihuishu.com/zhs/onlineexam/ueditor/201904/7465b7f375c9449fbbb74449bb66ea07.png
求图示电路中的电流i( )和16Ω电阻上的功率( )http://image.zhihuishu.com/zhs/onlineexam/ueditor/201904/bcac110e5be243df877f828be8d65150.png
在图示正弦交流电路中,若电源电压有效值U=100V,角频率为ω,电流有效值,电源提供的有功功率P=866W,则电阻R的值为()
在图示正弦稳态电路中,若电压表读数为50V,电流表读数为1A,功率表读数为30W,R的值为()