Positive SSL
    14.素養(4)
1 如圖,L1=4H,L2=2H,L3=3H,M12=0.5H,M23=0.5H,M13=0.2H,則總電感為
A 7.4H
B 5.2H
C 6.2H
D 7.8H

M12:互消;M23:互消;M13:互助

LT=L1+L2+L3+2(-M12-M23+M13)

=4+2+3+2(-0.5-0.5+0.2)=7.4H