两个并联时
I1=U/R1=6/10=0.6(A)
I2=U/R2=6/20=0.3(A)
U1=U2=6(V)
P1=U1*I1=6*0.6=3.6(W)
P2=U2*I2=6*0.3=1.8(W)
两个串联时
I1=I2=U/(R1+R2)=6/(10+20)=0.2(A)
U1=I1*R1=0.2*10=2(V)
U2=I2*R2=0.2*20=4(V)
P1=U1*I1=2*0.2=0.4(W)
P2=U2*I2=4*0.2=0.8(W)
两个并联时
I1=U/R1=6/10=0.6(A)
I2=U/R2=6/20=0.3(A)
U1=U2=6(V)
P1=U1*I1=6*0.6=3.6(W)
P2=U2*I2=6*0.3=1.8(W)
两个串联时
I1=I2=U/(R1+R2)=6/(10+20)=0.2(A)
U1=I1*R1=0.2*10=2(V)
U2=I2*R2=0.2*20=4(V)
P1=U1*I1=2*0.2=0.4(W)
P2=U2*I2=4*0.2=0.8(W)