Select the correct description of how inductances are combined in series and in parallel
a) Inductances in series are added. Inductances in parallel are combined by taking the reciprocal of the sum of the reciprocals of the inductances
b) Inductances in series or parallel are always added
c) Inductances in series are combined by taking the reciprocal of the sum of the reciprocals of the inductances.
d) Inductances in parallel are added. Inductances in series or parallel are always combined by taking the reciprocal of the sum of the reciprocals of the inductances.