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  • (1)ÓÉ(R1+R2)* I=U,µÃR2=U/I-R1=16/2-5=3(Å·Ä·)
    (2).ÓÉR1*I1=R2*I2=R2(I-I1),ÔòI=(R1*I1/R2)+I1=(3*4/4)+4=7(°²Åà)
    (3).ÓÉI1/I2=R2/R1,µÃI1/I2=8/4=2/1,ÄÇôI1=I*[I1/(I1+I2)]=6*2/3=4;I2=6-4=2(°²Åà)
    (4).ÓÉP2=I2^2R2µÃ,I2^2=P2/R2=27/3=9,ÔòI2=3;ÓÖR1*I1=R2*I2,I1=R2*I2/R1=3*3/6=3/2(°²Åà)
    (5)P1=U1^2/R1,µÃP1=10^2/5=20,ÓÖU1/U2=P1/P2,ÔòP2=U2*P1/U1,P2=20*20/10=40(ÍßÌØ)



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