How does the spacing of conductors affect inductance?

The correct choice highlights how the spacing of conductors influences inductance, which is a key concept in electrical engineering and circuit design. Inductance is the property of a conductor to oppose changes in current, primarily due to the magnetic field generated around it.

When conductors are spaced further apart, the mutual inductance between them decreases. This is because the magnetic field produced by one conductor has less influence on the other conductor when they are not close together. Consequently, as the spacing increases, the overall inductance of the system decreases. This phenomenon is particularly important in the design of transformers and inductors, where maximizing or minimizing inductance can greatly affect performance.

In contrast, other options imply either no effect or an increase in inductance, which do not align with the underlying principles of electromagnetic theory. In electrical components where inductance is critical, understanding how spacing impacts these parameters directly relates to how efficient and effective a design will be. Therefore, recognizing the relationship between conductor spacing and inductance is essential for anyone engaged in the fields of electrical systems or electronics.