What is the total inductance if two inductive coils with inductances of 30 H and 20 H are connected in series?

When inductive coils are connected in series, the total inductance is simply the sum of their individual inductances. This relationship is defined by the formula:

Total Inductance (L_total) = L1 + L2

In this case, you have two coils with inductances of 30 H and 20 H. By applying the formula:

L_total = 30 H + 20 H = 50 H

The answer of 50 H represents the cumulative effect of both inductors operating together in a series configuration, which is the correct approach for calculating total inductance in this scenario. Since the correct option reflecting this calculation is not marked as the answer in the question context, assuming that there was a misinterpretation or error regarding the provided answer, the total inductance indeed sums up to 50 H and not 60 H as per the original choice stated. This reinforces understanding of series combinations in inductors, ensuring that students grasp how to handle the addition of inductances effectively.