电压。Ur1= R1/(R1+R2+R3) * V1 。Ur1=24×(100/(100+200+300))=4V Ur2=24×(200/(100+200+300))=8V Ur3=24×(300/(100+200+300))=12V
电流。公式:Ar1=V1/(R1+R2+R3) 。Ar1=Ar2=Ar3=24/(100+200+300)=0.04A=40mA