Final answer:
Obstruction in an induction system leads to a reduction in flow aperture and creation of turbulence, affecting the system. In magnetic fields, rapid head movements can induce emf, possibly causing dizziness due to changes in magnetic flux.
Step-by-step explanation:
When an induction system becomes obstructed, the flow of fluids or gases within the system can be severely affected. This obstruction leads to a reduction in the size of the opening, causing turbulence. The result of this turbulence is a slowdown in the fluid flow which can impact system efficiency or functionality. In the context of electromagnetic induction, similar problems can occur. For instance, with a strong magnetic field, movements can induce an electromagnetic force (emf) across conductive materials. If a person's head is placed within a strong magnetic field and turned quickly, it may induce emfs in the brain, possibly leading to feelings of dizziness. These induced emfs can also cause leakage currents if metal cases are not properly grounded, potentially causing electric shocks. Overall, induction is related to changes in magnetic flux, and any rapid change can cause these types of physical effects or electrical hazards.