① <img class=jc-formula style=vertical-align: middle; src=https://huaweicloudobs.ahjxjy.cn/5F931CE6FE3F3703B2BFEF357DAD2B21.png data-tex=I=2.24A,{ U }_{ ab }=20V,\hat { S } =(20-j40)VA/>
② <img class=jc-formula style=vertical-align: middle; src=https://huaweicloudobs.ahjxjy.cn/DB777B73C24D41B286D5E026FC00C8D6.png data-tex=I=2.24A,{ U }_{ ab }=20V,\hat { S } =(20+j40)VA/>
③ <img class=jc-formula style=vertical-align: middle; src=https://huaweicloudobs.ahjxjy.cn/819522447EA95D8DB3A83DC72EC3A361.png data-tex=I=2.24A,{ U }_{ ab }=20V,\hat { S } =(40-j20)VA/>
④ <img class=jc-formula style=vertical-align: middle; src=https://huaweicloudobs.ahjxjy.cn/D9CE7A72F664633AC68008A7A39F9B30.png data-tex=I=2.24A,{ U }_{ ab }=20V,\hat { S } =(40+j20)VA/>
① <img class=jc-formula style=vertical-align: middle; src=https://huaweicloudobs.ahjxjy.cn/E748D6574C408C93B7B80461A8099E47.png data-tex=A=3A,{ R }_{ 1 }=\frac { 50 }{ 3 } \Omega ,{ R }_{ L }=6\Omega ,{ { X }_{ L } }=8\Omega />
② A=3A<img class=jc-formula style=vertical-align: middle; src=https://huaweicloudobs.ahjxjy.cn/AE8788B340FB8FA4A16969F73DD8AD81.png data-tex=A=3A,{ R }_{ 1 }=\frac { 50 }{ 3 } \Omega ,{ R }_{ L }=8\Omega ,{ X }_{ L }=6\Omega />
③ <img class=jc-formula style=vertical-align: middle; src=https://huaweicloudobs.ahjxjy.cn/2CA74832418B0B563849DB17F5411CC5.png data-tex=A=3A,{ R }_{ 1 }=6\Omega ,{ R }_{ L }=\frac { 50 }{ 3 } \Omega ,{ X }_{ L }=6\Omega />
④ <img class=jc-formula style=vertical-align: middle; src=https://huaweicloudobs.ahjxjy.cn/4905E43D8F71453F445B49487198301F.png data-tex=A=5A,{ R }_{ 1 }=\frac { 50 }{ 3 } \Omega ,{ R }_{ L }=6\Omega ,{ X }_{ L }=8\Omega />