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The movement of holes from the P-type region toward the N-type region to fill electron vacancies is called ______.

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The movement of holes from the P-type region toward the N-type region to fill electron vacancies is called ______. Answer: Diffusion

Diffusion is the movement of charge carriers from a region of higher concentration to a region of lower concentration. In a PN junction, holes tend to diffuse from the P-side toward the N-side, while electrons diffuse from the N-side toward the P-side. Near the junction, these carriers can recombine, leaving behind fixed ions and forming the depletion region.

Question context

This question is part of 📡 Electronics and Communication Engineering (ECE) within the broader 🛠️ Engineering Essentials subject and appears in the PTS Pakistan Testing Service preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.