What is the net inductance value of four parallel inductors each rated at 8 Henry?

When dealing with inductors in parallel, the total or net inductance is calculated using the formula for parallel inductances. For inductors, similar to resistors, the reciprocal of the total inductance (L_total) is the sum of the reciprocals of each individual inductance. The formula can be expressed as:

1/L_total = 1/L1 + 1/L2 + 1/L3 + 1/L4

In this case, each of the four inductors has an inductance of 8 Henry. Therefore, the calculation can be set up as follows:

1/L_total = 1/8 + 1/8 + 1/8 + 1/8

This simplifies to:

1/L_total = 4/8 = 1/2

To find L_total, you take the reciprocal of 1/2, which yields:

L_total = 2 H

This shows that the net inductance of the four parallel inductors, each rated at 8 Henry, is indeed 2 Henry. Understanding this formula and its application is crucial for calculating the net inductance in similar configurations, making it an important concept for anyone pursuing the NETA Level 1 certification.