将R<sub>1</sub>、R<sub>2</sub>两个电阻并联,总电流为I,则R<sub>2</sub>中的电流为()。<br /> <img src="https://nimg.ppkao.com/2019-12/songlv/2019120813280519205.jpg?sign=8fc2ba5339a9cbc0e888279db8eb3fcc&t=62e4df7e" />
A、A
B、B
C、C
D、D
A、A
B、B
C、C
D、D
A、(R<sub>1sub>+R<sub>2sub>)/R<sub>1sub>R<sub>2sub> B、R<sub>1sub>R<sub>2sub>/(R<sub>1sub>+R<sub>2sub>) C、R<sub>1sub>+R<sub>2sub> D、R<sub>1sub>R<sub>2sub>
A、R<sub>1sub>>R<sub>2sub>>R<sub>3sub> B、R<sub>1sub><R<sub>2sub><R<sub>3sub> C、R<sub>1sub>>R<sub>3sub>>R<sub>2sub> D、R<sub>3sub>>R<sub>1sub>>R<sub>2sub>
A、R<sub>1sub>与R<sub>3sub>串联后与R<sub>2sub>并联 B、R<sub>1sub>与R<sub>3sub>并联后与R<sub>2sub>串联 C、R<sub>1sub>与R<sub>2sub>并联后与R<sub>3sub>串联 D、R<sub>1sub>与R<sub>2sub>串联后与R<sub>3sub>并联
A、R<sub>1sub>>R<sub>2sub>>R<sub>3sub> B、R<sub>1sub><R<sub>2sub><R<sub>3sub> C、R<sub>1sub>>R<sub>3sub>>R<sub>2sub> D、R<sub>2sub>>R<sub>1sub>>R<sub>3sub>
A、R<sub>1sub>烧坏,R<sub>2sub>不会烧坏 B、R<sub>1sub>、R<sub>2sub>均烧坏 C、R<sub>1sub>未烧坏,R<sub>2sub>烧坏 D、R<sub>1sub>、R<sub>2sub>均未烧坏
A、顺磁质μ<sub>rsub>>0,抗磁质μ<sub>rsub><0,铁磁质μ<sub>rsub>>>1 B、顺磁质μ<sub>rsub>>1,抗磁质μ<sub>rsub>=1,铁磁质μ<sub>rsub>>>1 C、顺磁质μ<sub>rsub>>1,抗磁质μ<sub>rsub><1,铁磁质μ<sub>rsub>>>1 D、顺磁质μ<sub>rsub><0,抗磁质μ<sub>rsub><1,铁磁质μ<sub>rsub>>0
A、R<sub>1sub>>R<sub>0sub> B、R<sub>1sub><R<sub>0sub> C、R<sub>1sub>=2R<sub>0sub> D、R<sub>1sub>=R<sub>0sub>
A、R<sub>1sub><R<sub>2sub> B、R<sub>1sub>>R<sub>2sub> C、R<sub>1sub>=R<sub>2sub> D、R<sub>1sub>≤R<sub>2sub>
A、R<sub>1<sub>R<sub>2sub> B、R<sub>1sub>>R<sub>2sub> C、R<sub>1sub>=R<sub>2sub> D、R<sub>1sub>≤R<sub>2sub>
A、R<sub>1sub>〉R<sub>3sub>〉R<sub>2sub> B、R<sub>1sub>=R<sub>2sub>=R<sub>2sub> C、R<sub>1sub>〈R<sub>3sub>〈R<sub>2sub> D、都不对